Kill Bones said
I doubt it'll be as hype a dragon age origins and allow for multirace drifting
I'd love to play as a retarded vorcha
But come on
There's a lot of races
And that'd be a lot of voice acting
You could technically get around the voice acting thing by just having the same actor go through the voice filters each of the races do without it seeming too weird. Like the turians, for example, have the actor's voice with the same snippet of dialog dubbed over at a half octave lower to give it that "flanging" effect. Then it's just a matter of having a few reactionary pieces of dialog reflecting your race and origin story (not so different than the 3 origin back grounds and 3 war records, plus variants for gender if you think about it), and it could work rather nicely. But as you pointed out, Dragon Age did the same thing and it did play out differently for each one. Heck, in Origins they had to make entire opening quests and unique levels just to account for your race and back story.
It might not be as far fetched as it seems at first!