When I heard the idea of pixie, I have to say, I totally see it more like Minstrel's idea than Harold's (sorry Harold). I don't think having another generic race with "normal" things is really worth it to be added, we have enough mundane races as it is imho. I especially picture any race that is 'tiny' to have at least -25 to str too, I mean, common, they are 2 feet tall, how can they pick up heavy things (yes, I realize they are magical).

I also really like the idea of the 'weakness' aspect of other races changed into something more along the lines of the vulnerability, but using the damage type and not the metal to determine how much damage might be added. I think the amount of damage added of course needs to be looked at in great detail, but it's better than increasing the critting ability as much as the weaknesses do.