Never found that to be an issue in the Mass Effect games. Mostly because the characters in those games are generally written so much better than any of Bethesda's stuff. Hopefully this time around they sort out that glaring weakpoint, but the E3 presentation wasn't exactly encouraging in that respect. I liked what I saw of the mechanical groundwork, but the personality surrounding it, not so much.
The problem is that with this move Bethesda essentially kills any possible freedom of RP which Fallout is very well known for.
Hell, it renders good old 1INT retardo playthrough nigh impossible for obvious reasons.