BioWare, I have been with you for almost 14 years, I played almost all of your games: brilliant Baldur's Gate, epic Planescape Torment, screwed (but with great multiplayer) Neverwinter Nights, amazing Dragon Age (well apart from the sequel). Still, my favourite is Mass Effect. In Mass Effect you joined everything best from all the previous games, put it into a brand new universe along with characters I will never forget (Mordin, Tali and exceptionally, after the 3rd part - Liara, which was the loveliest female character you have ever created).
I was so emotionally tied to this game, amazed by it's unique atmosphere, great story and awe-struck by its "epicness". You made an unforgettable 3-part masterpiece, which by far outstrips any other computer game. I think that Mass Effect already is among the proudest representatives of virtual entertainment. It really is an interactive novel, something in between written story and a movie, something that might become the basis of future game industry. It was not only you who wrote the story, it was also us - each Shepard had his own character, other choices, other interest, etc. And it was totally worth it...
However, this what was the basis of the series was, as many before said, destroyed in last 10 minutes of gameplay. Mass Effect 3 was an excellent game probably the best I have ever played, even better than its predecessors. Still, all the effort we could make during the game was for naught, all the hope Shepard and his companions had was for naught, all the beauty of Krogan, Turian and Quarain-Geth quests was vanquished by the horrible three endings you gave us.
Many of us were expecting a happy ending and the story gave us the notion that it might eventually come, that Shepard's labour had any sense. Instead all the fleets are trapped on Earth, mass relays are destroyed, Shepard is dead, literally each ally we had is doomed by our action. So, Shepard turns out to be after all a hero, who stopped the Reapers, but at the same time sentenced thousands of Turians, Quarians and Geth to death and seclusion on Earth? Really a hero? That is not ok, and as far as I know my Shepard, he would never allow that to happen.
I am also okay with a sad ending, I could accept it, but as many people pointed out, those sad endings we get are totally, totally illogical and badly tied with the rest of history. Why the hell Shepard can't argue with Catalyst? Child's line of argument is so weak and bad that I really do not wonder why you put a child for that role, noone sane and mature would be saying such nonsense... I really hoped for a better explanation of Reapers' action - this organic-synthetic conflict is a very strange reason to simply wipe out all the civilisations in the name of greater order. What kind of order is this I ask you? I am pretty sure that a great war between synthetics and organics would cause less destruction and misery than Reapers' actions. Also, all wars have conclusion - one side would eventually win, so why is it better to get rid of al of the galactic beings?
By the way, how did it happen that destrucion of mass relays did not wipe out entire system, as it did in Arrival? This would be even worse than Reapers winning the war. Anyway, what's the point of mass relays annihilation, tell me? I simply do not understand why it had to occur.
Before enetering the conduit (and I was there with my two favourite squaddies - Tali and Liara), everyone were told to be dead - so what the heck is Tali doing on Normandy? How did she escape? That was not explained and is a big story incongruence. Apart from that I really hate the after-credits scene with child and astronome. Oh come on, you really had to coclude it with an utterly kitschy Hollywood scene? This game did not deserve that.
To conclude, Bioware I beg you, give us additional endings. You don't have to change anything in the story, just let us persuade the Kid that he is wrong and do let us end this war in another, better way. We really want it.... Leave the other endings, but fix the issues with mass relays and aftermath Normandy crew, this totally is out of logic. A Reaper-victory ending would be also a very nice addition.
And yes, if it requires high resources, we will pay for it and you know that.