I'm not much of a writer, I work with the little ideas. So here's some things that should have been done.
1. The Reapers should have had a believable motive. So believable that siding with them, or (after persuasion) reaching a compromise with them, should be a viable, and to some, attractive, option.
2. Shepard should have the option to reject the choices Starchild gives you (assuming they show up). One or more of these options should involve finding a way to weaken the Reapers so that the fleet you've spent the WHOLE GAME compiling can take them out (Assuming Starchild is basically Reaper Command & Control, the logical choice would be to DESTROY HIM or cut off his comms, making the Reapers uncoordinated, or if he had Direct Control of some, taking some out of commission or making them turn on the others.)
- Subnote: The Reapers should not be undefeatable by military means. Seriously, you spend the game defeating them and building up a huge army - it is never demonstrated at any point in the game that conventional warfare by a united galaxy will NOT work. Yes, the facts suggest it, people speculate on it - but as a player, I never see anything over the course of the game that suggests it's not possible. If that's supposed to be the case, BioWare failed at making it clear, and should have.
3. The aftermath should make it clear what happens to your crew, your allies, the various alien races and worlds, and how things change as a result of the drastic changes that you've wrought.
4. It should make sense.
1. The Reapers should have had a believable motive. So believable that siding with them, or (after persuasion) reaching a compromise with them, should be a viable, and to some, attractive, option.
2. Shepard should have the option to reject the choices Starchild gives you (assuming they show up). One or more of these options should involve finding a way to weaken the Reapers so that the fleet you've spent the WHOLE GAME compiling can take them out (Assuming Starchild is basically Reaper Command & Control, the logical choice would be to DESTROY HIM or cut off his comms, making the Reapers uncoordinated, or if he had Direct Control of some, taking some out of commission or making them turn on the others.)
- Subnote: The Reapers should not be undefeatable by military means. Seriously, you spend the game defeating them and building up a huge army - it is never demonstrated at any point in the game that conventional warfare by a united galaxy will NOT work. Yes, the facts suggest it, people speculate on it - but as a player, I never see anything over the course of the game that suggests it's not possible. If that's supposed to be the case, BioWare failed at making it clear, and should have.
3. The aftermath should make it clear what happens to your crew, your allies, the various alien races and worlds, and how things change as a result of the drastic changes that you've wrought.
4. It should make sense.