Well, at this point it is up to you realy. If you want to do it, go ahead. Just think throught how you want to group the weapons up, by type or by tiers. Here is an example on Defensive Skills you can find similar topics to Offensive and Utility tree. With backgrounds I belive you will get a lot of help from The Wiki. And no, backgrounds are not classes. There are no classes per say, you can make up anything you want here. The background is what the character was doing before deciding to try the mercenary life.
It is always nice to see topics discussing the current state, and I’m pretty sure it does help the devs to get at least an overal view about player preferences, opinions. It is all feedback, the more the better.
