I was reading some really OSR and the concept of Weapon Proficiencies came up. I think this is actually a great limited to add along with the new encumbrance and time limits. Like all rules in Cresthaven RPG this is an optional rule, but one I cannot recommend enough.
If you ARE NOT proficient with the weapon you are using, you receive a -3 penalty to both hit and damage rolls. NOTE: A negative damage amount is damage applied to the player character. This illustrates that they have accidentally hurt themselves with an unfamiliar weapon.
Each class get’s 1 weapon that they are proficient with.
Cavaliers get 3 and Barbarians 2, this is due to their life long combat interest.