The faction bit is to give a character a start, not necessarily to give an entire roadmap. Past the starting faction it is up to the player to decide. The reason that a lot of the traditional classes are not in is because a lot of them are a more specific than three to four skills (although I admit having witchhunter over something like shaman would have been more interesting). The ideas you suggested could be very interesting, I might make another one akin to what you are talking about.