Obviously everything takes time and work, but animations for games are not so complex or time consuming that they drive broad decisions like this. While I don't do game character animations, I do work with the software and while I have no doubt that each animation was adjusted for each race there are tools which can copy animations between characters easily and almost seamlessly. When you do this you aren't animating a sword swing for example, from scratch, for each race. None of this has to detract from the quality either. As I said you have to adjust those animations for each race not just copy them. The Wildstar team looks to be an extremely talented bunch. I seriously doubt they would restrict which race can be which class because of animations.