OOO should remove the sleep resistance in the Jelly Set and its upgrades (excluding the Ice Queen), because sleep resistance is virtually useless. I mean, they removed slooms (the only enemies who inflict sleep), and players almost don't buy it anymore and the Jelly set and its upgrades are useful only for costumes (and the Ice Queen set). OOO should change the sleep resistance into something like poison resist (I don't know what they should change it) so that it would be useful again.