Read the codex and finish the game first.It's not just about the ending, it's about countless plotholes and broken promises.
Also, this is not a painting, or a book, or a movie.This is a
game.This is a game where we were promised that our every single choice would
"affect the outcome".This is a game that the ending wouldn't be as A,B,C.
Hah...And the worst part is, they didn't even care to present the ending as that.They did it like this:
A ,A ,A.Besides, if bioware
does change the ending with a DLC, then don't buy it.Nobody is forcing you to do so.You don't have to buy everything bioware throws at you,no?That way, you'll be happy, I'll be happy, we'll all be happy and go on our merry ways.