Randolpho
First Post
I also think this is an interesting house rule. However, I would argue against modifying the skill system for it, and I don't think it should be one per simple weapon, either.
I would argue instead that you create a Weapon Knack Feat that replaces Martial Weapon Proficiency and can be taken multiple times (each time granting a different knack applied to a particular weapon type). Classes that start with Martial Weapon Proficiency would get a single instance of Weapon Knack in exchange, and Weapon Knack would be inserted into the Fighter's list of bonus feats.
I would argue instead that you create a Weapon Knack Feat that replaces Martial Weapon Proficiency and can be taken multiple times (each time granting a different knack applied to a particular weapon type). Classes that start with Martial Weapon Proficiency would get a single instance of Weapon Knack in exchange, and Weapon Knack would be inserted into the Fighter's list of bonus feats.