BotW is not an RPG, it has less RPG elements than God of War and basically all classic Assassin's Creed games except the first one.
if BotW is an RPG then there are basically no other types of AAA games on the market anymore
well, again, you can't really do much about that.
A Jedi uses his own weapon and almost never armor.
so at most you can do cosmetics...
they could make lightsaber colors be collectables like in Force Unleashed, but that's about it... maybe cooler outfits than the different ponchos of the first game.