In my head I have similar proficieny-based skill system, but only with weapons. You gain proficiency what you do. You mainly use 2 handed swords? You will be better with them.
You used to use maces, but not now? You slowly loose your mace-using skills over time if you don’t use maces. That’s why I did not share this, because a lot of players would freak out over losing proficiency (which they don’t even use anymore).
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