I have an idea for an RPG. All kinds of swords (scimitars, fleurets, sabers, broadswords, etc) are in one category (just Swords), so when you improve your skills with swords, it applies to all kinds of swords.
Two handed swords, however, would be in a different category, but that's another story.
What do you think about this idea? do you know any game that has done this before?
Sounds like Diablo2. D2 didn't differentiate between one handed and two handed swords, but it did differentiate between swords, maces, axes, etc. It's not a significant difference IMHO.
So RPGs often have stat++ for weapons/magic you are currently using. Positive feedback for sticking with same weapon/magic. Encourages specialisation.
Your idea is do stat++ for all weapons/magic regardless of which you currently equip.
Why not do stat-- for weapon/magic when used? Or alternatively, stat++ on all other weapons/magic except the current one, which stays constant. Would encourage variation rather than specialisation and could give interesting gameplay (don't use special sword; keep for special occasion like final boss).
The universal good answer is that it depends.
What do you want to achieve with it? Is there a real choice to be made? In real life it's different fighting with a gladius than fighting with a longsword yet they can both be handled with one hand. But gameplay wise I would find it tedious if I have different skills for each and every weapon.
