I was have an idea. Game will have sixtagons and we will fight on them just like all RPG games. Also that system allows team deathmatch option. And you can fight without thinking about level bcause you gain reward as you dealt damage(resistance is a problem). And if you can survive you gain extra rewards. Rewards depends on how much you survived and how much you damage dealt. Also if you dealt dmg to winner enemies, you gain more reward but if you kill weak enemy you cant gain too much reward.

your idea is a great one. i would only add the level span so lets say a level 10 isnt fighting a level 40 regardless of what your reward idea was based off of a level 10 will barely even scratch that lvl 40.