Like ADG, two of the endings went against everything you working for. I still don't understand why the Control ending also destroyed AI instead of just the Reapers, was it some Galaxy Wide EMP or something? And it was a very shitty thing to do if you were able to get the Geth and Quarians to cooperate. You essentially disprove the entire Reaper religion, then have to kill off AI? I don't buy it.

Aside from that, there were a few holes in the ending. Why was Joker flying through the Relays at the end? Why were the two people I used on the final mission getting out of the Normandy? Why, if you get the "good" destroy ending, is Shephard surrounded by concrete (not on the Citadel)?.

Another reason it was a terrible ending(s) was that no matter what choice you made, it was essentially the same outcome. Whether you used Control, Synthesis, or Destroy, you effectively end interstellar travel for the whole galaxy, stranding all the fleets in the Sol System. And ADG is right, pretty much any scene with "energy" was EXACTLY the same but for the color.

Atleast the extended endings explained some of it. To me, I felt that the extended endings should have, at the very least, explained why Joker and Crew were using the Relays.