Honestly, if I were to balance out Map 9, I would awoke the fact that you need a certain skill requirement to use things, for example, uhm Joker Pickaxe. You need like Lvl 5 or smth to use the ability, but the enchants on it like fortune and efficiency would work, but the whole enchanting ore thing wouldn’t.
Obviously with this would come easier leveling up because lets be honest man, over 1000 chests for 1 level