This just popped into my head after looking around on smogon for a while, but what if they added a move that acted like safeguard (up for the party for 5 turns) that made all moves affecting your party to be neutrally effective when they hit. Do you think a move like that would go over well?
Hahaha yes, that would be aweful and amazing at the same time! It was just a thought, I figured you cancel out any immunities or resistances to not have any weakness would balance it a little. But Shedinja could still get roughed by hazards or status.