Haha. They're probably thinking of the cheapest way to do this. Cutting out everything following the space elevator and throwing in epilogue cards instead?Producer Mike Gamble on Twitter: http://twitter.com/#!/GambleMike/status/181050310863765507
But to be more serious, if they actually wanted to fix it (I don't think they do), they won't have to do a whole lot. Cut out everything about and following the space elevator and replace with quick flashes of the force you brought in, definitive Reaper victory or loss, definitive Shepard death or life, funeral/celebrations, and a brief epilogue (hell you could keep the stupid creepy grandpa if you want to). The art assets and animation library is already there and VA is the only thing they need to tackle. Lance Henriksen would get the brunt of the work as he'd probably get a whole speech, while every other squadmate only needs two to three lines of dialogue.