The fact that everyone is on a different stage in the game. Some beginners and some are veterans just looking for specific dragons. Some may need different levels of joker orbs or trading essences and are stock with maybe thousands of useless common orbs since the have all commons, or beginners need rares/commons/ epics but they have heroic/legend joker orbs/essences that they can’t use yet. I think an ability to upgrade/downgrade these two things would be a good addition.