Found this on the Bioware forms its a much better ending with out changing much of whats in the game:
azc23
"A post from someone who cant post here yet.
AN ALTERNATE ME3 ENDING IDEA
Disappointed by the end? Confused and saddened by how brief and generic it is? Try this instead. Oh, and go to this in another window: http://www.youtuberepeat.com/watch/?v=Lg1ElmVQ2pw&feature=related. Here goes. (Alternate Rebellion ending idea was taken in part from this guy's brilliant post: http://social.bioware.com/poll.php?user=1183972&poll_id=29101) Note: I don't hate the choices as they are, I dislike the abruptness, the lack of explanation & follow-up... and another option WOULD be nice.
Wipe the original endings from your mind, and experience this instead. The ending should be as "HOLY SH** EPIC" as the mother of all Thresher Maws eating the Reaper.
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First off, during the actual battle scenes, if you saved the Rachni, you are treated to swarms of Rachni soldiers overwhelming a screaming Reaper on the ground, covering it like ants; if you saved the Geth, you get to see Geth flyers and ground troops destroying husks and a Reaper Destroyer.
Finally, your Shepard struggles to the top of the Citadel. The God-Child explains that he is an ancient AI created to protect organics from being permanently wiped out by their created synthetics, and that the Reapers are his tool. He still seems fairly emotionless, but does explain that he took the form of Shepard's "regret and loss, because that is my existence." Shepard is given the choice to Control or Destroy the Reapers, or to use Synthesis: combine all organic & synthetic life to forever end the cycle. He/she is told all of the following:
All three choices will make the Mass Relays non-functional, but they won't explode (this would, after all, destroy all of the planets nearby). If he/she chooses to Control the Reapers, the Relays can be rebuilt by the Reapers in weeks. If he/she chooses Synthesis, the same happens; the Reapers will be asked by the AI God-Child to rebuild the Relays, and then leave to pursue their own destinies. If the Reapers are flat-out destroyed, the Relays will take decades to rebuild, and many of the Quarians and Turians will die of starvation before they can take the Relays home. The Geth and EDI will also die. Synthesis and Control endings will both end in Shepard's death.
Shepard may obey and choose one of the previous 3, or may rebel instead, and refuse all three choices offered him/her, if full Paragon (this is wrong) or Renegade (we don't need you). Depending on War Assets (success requires a max readiness score and Geth help), a rebellion means that either the Reapers are destroyed without the Relays or Geth being damaged, or they are victorious and finish the cycle.
Shepard makes a choice and collapses or burns in the green laser, or if he/she rebels, turns and points out at the fleet and makes a speech to the god-child about how synthetics and organics are already working together, and that the god-child AI isn't a catalyst at all, but that the catalyst for victory is rather the spirit of humanity, which Shepard then declares is the spirit of life, and determination, and is in all things--even the Geth (if they were saved). He/she finishes the speech with "THIS ENDS NOW." Then he/she collapses from his or her wounds.
Regardless of choice, we then see the black & white slow-motion flashbacks, showing Shepard's romance (if any) and then other crew members. If you chose Control, Synthesis or Destroy, the Mass Relays are destroyed, as they are currently, in flashes of red, blue or green light. The Normandy is NOT shown.
Then the Primary ending plays, and then the Secondary, followed by the remainder of the Primary if any, all depending on your choices and war readiness.
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Primary Ending 1 (chose Rebellion w/ War Assets, or chose Destroy, Control or Synthesis
We see the Mass Relays slowly being rebuilt, if destroyed, and then the various peoples you chose to save through your gameplay coming home to their heavily-damaged planets and preparing to rebuild.
Relays: If you chose Control, you see the Reapers fly off to Relays and begin repairing them. If you chose Synthesis, you see the Reapers assisting and then leaving, vanishing into the blackness of space; if you chose Destroy, it is fleet ships making the repairs.
Homecoming: You see Quarians, unmasked on Rannoch, building alongside the Geth, or alone if you killed the Geth, or just the Geth if you killed the Quarians; the Turians putting buildings back together on Palaven; and the Krogan landing ships in battle camps on Tuchanka to other Krogan cheering and, if you cured the Genophage, guarding little Krogan who are running about. If you saved the Rachni, you see them assisting on at least one of the worlds.
You see the Council coming to a stage and speaking, backlit by bright sunlight, in a huge, pristine, modern room (clearly rebuilt). If Anderson survived initially, he is with them. For a Synthesis, Rebellion w/ Assets or Destroy choice, this fades into black. For a Control choice, the Reaper ships are seen flying into the distant sun, and the pinpricks of light as they explode fade into white. This ending builds up more and more suspense as to what happened to your Shepard and his or her crew. The black or white then fades into a Secondary Ending.
Primary Ending 2 (chose Rebellion w/o enough War Assets):
We see the Reapers swarming over everything, to the tune of that sad dream music. The races you saved in your gameplay fall one by one in cinematic fashion, your crew is shown dying in epic last stands, your love interest (if any & if alive) is shown kneeling atop the Citadel, a shuttle behind them, holding your unconscious hand as an explosion hits, and then the Reapers are shown moving off toward the Relays and using them to leave, leaving cold, dead, dark planets behind. This zooms down onto the top of the Citadel. Shepard (and the love interest, if they arrived) is shown lying dead, and the little boy AI is shown standing over him/her/them, and says aloud "They came farther than any before. The cycles are nearly over." This then fades into Secondary Ending 2.
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Then, depending on your choices throughout the first two games, the previous ending choice fades into one of the following Secondary Endings:
Secondary Ending 1 (chose Synthesis, Control, or Rebellion w/o enough War Assets):
Shepard walks into the dark dream-forest once more, the child in the distance standing facing him/her. The shadowy figures close in, and then after a few moments the child turns into white light which sweeps over the landscape, changing it into the strange eden world of the current endings. The figures flash and become all of Shepard's dead friends, smiling and welcoming him/her. The Normandy lands at the edge of the trees, and the hatch opens; Shepard's crew emerges, also smiling, and the love interest, now dead even if not previously, greets Shepard with an embrace. (This is obviously an afterlife; Shepard is dead.)
Secondary Ending 2 (chose Destroy, or Rebellion w/ enough War Assets):
Shepard walks into the dark dream-forest, the child in the distance standing facing him/her. The shadowy figures close in, and then the child glows white, and the brightness sweeps over the landscape, changing it into the strange eden of the current endings. The figures flash and become all of Shepard's dead friends, clapping, smiling and thanking him/her. If Wrex is dead and you didn't cure the Genophage, he is standing a distance away and does not approach. If there was a love interest & they're dead, or another team member if not, they embrace Shepard and say something motivational, such as "Thank you. For everything." This fades into a sky, with a sun overhead breaking free of clouds; Shepard's love interest, if they survived (or another crew member if they didn't) is kneeling over him or her, and their voice fades in shouting "Shepard? Shepard!"
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The Secondary Ending then either fades into black & credits if you got Primary Ending 2, or back to the Council giving their speech for Primary Ending 1. For Primary Ending 1:
If Shepard survived, the Council speech scene is picked up where it left off, and Shepard triumphantly moves onto the stage, to the cheering of the masses. His or her surviving crew takes up places behind him. This fades into a scene of Shepard either looking at a photo of the dead love interest, or being held against the love interest if they survived, or standing alone if there was no love interest; either way, the camera pans out to show Shepard from behind, looking down at Earth from a ship window, light flooding in around him/her to frame an angelic figure(s).
If Shepard died, the camera instead zooms out from the council to see a decorated coffin beneath their podium, or two if Shepard had a love interest. The speaking council member can be heard saying things along the lines of "pushed on when we did not believe; fought for us all when we would not fight; aimed for peace when we wanted only war" (for Paragon, for Renegade, "aimed for victory when faced with only defeat."). Any surviving crew files along in a line to lay flowers and so forth onto the coffin, and this fades to credits, while the voice of the speaking council member fades out with proud words, something along the lines of "And his (or her) sacrifice will never be forgotten."
Credits roll, and only the main menu comes after (no DLC text; no creepy Grandpa).
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Even if you removed the Rebellion option, you'd still have a much better-fleshed-out ending IMO, but with the same options & consequences in the long run. Nothing would be changed; it would just be elaborated upon & much more satisfying, like eating a big piece of cake instead of being handed an unrecognizable crumb. Maybe it's a very thought-provoking crumb, but I'd still rather have the damn cake after baking it for this long.
(Written by Feralkyn, who can't post yet >.>)"