This may have been said before but I think most people's biggest problem with the Mass Effect 3 ending and the lead up to the ending was that basically all our choices from the 1st 3 games and especially all our efforts building up a massive Coalition of Alien Fleets made no difference at all. It didn't matter. Most of you who have finished it know what I'm talking about. Red, Green, Blue. The Battle for Earth...same no matter what.... cinematic same no matter what... etc. What's your favorite color?
I'm sure these options would have been fleshed out if it had another 6 months of Dev time. Where's muh Volvus Bombing fleets and Geth Primes bringing the Rain of the hordes of Husks?