Alright so I finally finished this. I never saw the ending pre-Extended Cut. I didn't think the ending was THAT bad... My main gripe is that it's an ending fit for a movie. A 100 minutes movie. Not a game I've spent 100 HOURS with (3 games). When you've invested so much time, I think you do expect a little more aftermath detail. More than a 10 minutes slide show. You want to see more in-game cutscenes and discussions between characters, I don't know.
When you play this game as full paragon good guy as I did, when you come to the ending, no choice seems like a paragon choice. Maybe except synthesis. Control seems like a doomed plan, and Shepard was convinced of it just minutes before when discussing with Illusive Man. I don't know. I was full paragon, but in the end I decided to just keep going with the plan I had since the beginning of this damn series; win the war against the reapers and trying to give the current cycle a chance to be different. I guess my character just refused the fatality and the "war between organics and synthetics is going to happen again and there's nothing you can do about it" crap that the crucible is convinced about. The only horrible part is that you destroy AI life, geth and EDI. It is pretty crap since the geth (and Legion) are one of the coolest part of that universe. But yeah, I chose Destroy (I still tried the other ones). But the fact that this was the "red" choice felt wrong because as a paragon I kept clicking on anything blue when it showed up. I have to admit I also kind of chose that because of higher chances of survival of Shepard, because there was already too much that had been sacrificed by the character, and also that last scene with Tali was really intense (I had her as romance and she was in my squad and survived when running for the Conduit). Also, gotta love grinding War Readiness so that you can see a 1,3 second clip of Shepard still breathing. Thanks guys for the effort. So yeah, Destroy felt wrong, but it had a few things going for it for my character; survival and respecting his promise to his romance to "come back", standing by the current cycle and accomlishing the goal we had from the beginning, and doing what everybody was hoping for (win the war and give ourselves a chance to not get into a synth-organic war)
I'm actually a little annoyed at the synthesis ending. It comes out of nowhere, and seems to be the "right" choice, but it's just... I mean the transhumanism aspect is interesting, but killing Shepard for it seems to be just so it has SOME negative side. I don't think this ending should exist, it seems shoved in awkwardly.