That's my strategy, so far i never used mod in places that have leaderboards, not even guild battle or Dojo. I only use mod to skip hard chapter stages, farm resources in stages i already completed, and also in those insanely hard new events like boss rush and magma mountain (no idea what devs meant there, perhaps it's tuned fine for whales with BiS gears, but casual players like me can't beat anything). That's where Yunana comes in :D