I kind of disagree. Choosing a different race would (And should) drastically change the game, and I feel like one of the reasons Mass Effect's story felt so much stronger than Dragon Age was that they were focused on one story. That story had its own permutations, but there's no way a Krogan (For instance) could have experienced anything like Shepard's story. Now if they WANTED To put 5 or 6 completely unique stories in one game, I wouldn't complain, but I suspect that would be more work than they could handle.