I am enjoying 1, still haven't beat it. But I think if they pulled away from QTE to destroy the bad guys and instead just improved the "combo" section of the skill tree to "techniques" instead.
Maybe I am just too hooked on RPGs but I would like charactor development to be really fine tuned. And get rid of the damned holocrons. I hate this type of aspect in adventure games. Personally, I look up where they are so I can just keep going and grab them as I go past them. If I wanted to run around and look for stuff I would buy a game centered around that.
Instead of spending time hiding power ups and holocrons, spend time with the level system and perhaps add a thing or two where the player can be a little bit more involved in the story. I ain't asking for Mass Effect here by any stretch but give us some options in either dialogue or through gameplay.
The story in the game so far I don't find that bad.
One other idea I had the other day was this:
(I play on PS3 so the moves below are based on that.)
Rather than have you unlock [],[],O have like R1 be the "technique" button. After unlocking a technique, you could use this and it would go into a cinematic. For instance you unlock one called "Force Piledriver" which is Hold L1 (all techniques would require this) X,O,^,O and the game would go to a "cutscene" (really just cool camera angles) where your charactor jumps into the air, uses the force to thrust himself extremely high then pulls the enemy up to him, fries him, then force pushes him back to the ground rapidly. This would work like in a fighting game as distance to the enemy would have a range. Then you would go back to regular style. I think it would also be good to add a 3rd technique bar. (I personally just really dislike QTEs)
But ultimatley I don't find much wrong with the series. It is just a run of the mill adventure game set in the star wars universe with a semi-decent story. What I would be doing if I really went into it is building another game from the ground up. So, this is about all I got.