So, as you may be aware, the current system for assigning weapons to a particular skill is rather limiting, at least for more out-there projects.
For example, all melee skills except the pike spawn NPCs with a given weapon and a shield, even if the weapon is two-handed. This means that a two-handed weapon in the hands of an NPC, of any skill except the pike, is far less effective, because using a two-handed weapon with one hand carries skill penalties unless you are over the size or strength limit to do so. So how do you fix this? Do you move all two-handed weapons to the pike skill and rename it? If you do that, then all the two handed weapons are one skill, but all the one-handed weapons have their own skill. So then it balances out wrong. Well, my solution to this was put all one-handed weapons into the axe skill and rename that. Why the axe skill? Because any edged weapon that uses that skill can cut down trees, meaning it HAS to be the axe skill. If any other skill was used, you couldn't have woodcutters.
So now you're at ranged weapons. The hunter profession, as far as I am aware, will only use crossbow-type weapons. So, the bow skill is just the crossbow skill with less practical application, they can both now be merged. That leaves the last awkward one, the blowgun skill. But the blowgun skill is interesting because NPC blowgunners carry less ammo than bow or crossbow users and are thus much quicker to run out of ammo and charge into melee. This makes the blowgun ideal for any kind of "combination" weapon, like a gunsword for example. Or alternately, a "throwing" weapon skill, because NPCs don't know how to throw spears yet. So you'd have, for example, throwing spears and an atl-atl, or maybe a "last throwing spear" which has the same stats as the spear being thrown, but is kept by the NPC for when he runs out of ammo to use as a normal spear.
Basically, my concept is that if you are making a total overhaul mod with lots of exotic weapons, the most efficient basic setup is
-light melee unit (axe)- all one handed weapons
-heavy melee unit (pike)- all two handed weapons
-ranged unit (crossbow)- all quiver-using ranged weapons
-ranged/melee hybrid unit (blowgun)- all non-quiver ranged weapons
and then just wrestling and dagger skills unchanged except maybe names. Is there any observation I'm missing here?