I wasn't thrilled with the ending(s) either, and after listening to multiple gaming podcasts and youtube stuff, I wonder if EA had a big hand in how the end went down originally. I mean, the first Mass Effect is my favorite. The second one was good, but EA was the publisher, and they have overtly tried in the past to gain as many buyers as possible. That push, to me anyway, is why the sequel was such a departure from the original, gameplay-wise. The 3rd one had lots of moments, but the end did ultimately feel like it was shoehorned.
But I'm told the Citadel DLC is a blast to play and is definitely built for the fans.
Bookmarks