I disagree with Galka75. Traits on classes, at least to an extent, should be able to be cross-classed. Traits on jobs, those should be exclusive to the job. Classes are supposed to be a mix-and-match, play-how-you-want system. Jobs will be for specialization. Let's stick to that model for now.

But yes, it would be nice to have class traits. It's kinda silly to have all those points to apply traits and have very few worth using.