This is a very simple suggestion, but I feel it could be way more fleshed out.
Weapon proficiency perks could be obtained by having a certain amount of a stat. They would allow you to use weapons that weren’t originally tied to your class or subclass. Although you would be proficient with class weapon types by default, you’d need to have a certain amount of a stat in order to use particular weapons.
(IE: Paladins would be proficient with swords and heavy weapons by default, but they could stat into vitality in order to use a shield as well. A dex sorcerer could get a dagger with mana thief in his 2nd slot that he could use when he runs low on mana, and so forth.)
Having a system like this could allow for some very unique builds, and I think it’d fit right into the game.
I’d love to see how people would make unique builds for their characters.
I’m sure that this would require some major rebalancing of the game though especially with the possibility of things like berserkers with dual shields or melee simulacrum warlocks.
How would you guys feel if a system like this was implemented into the game?