There could definitely be some grey area (i.e. Halberds: pole arm or axe? Tomahawk: axe or projectile?) so Beth would have to either decide to choose a dominant class for each of these weapons, or make certain weapons apply to multiple class types (and therefore affect multiple skills). Otherwise they would have to minimize the number of weapon skills, which I don't think any of us want...
Also, each weapon type should have some unique animations, as well as properties that force players to really think about what weapons they use. Speed, power, weight, length, resistance, etc... If critical strikes and/or assassinations are in the game, then there will have to be animations for each weapon type for those events as well... Preferably multiple animations for some weapons (e.g. with a dagger, you could slit a throat, embed it into their skull from below the chin, embed it into their chest through the shoulder, etc.). [Sorry to be so morbid btw.]
I want there to be dozens of weapon types, and I want pretty much every one to be a viable weapon of choice if the player builds their character properly. Heck, I should be able to play through the whole game with a kitchen knife if I am stealthy enough to use it for assassinations every time, maybe laced with a poison to paralyze or knock out the enemy.