That's all I want, same with the shovel confirmation or the coin collection toggle that already exists. This is literally just the merge 5 game, no one wants to merge 4 or merge 6 because it's pointless to do so, and what's the point of punishing players for accidentally merge 4 of their high tier items just because their connection is unstable or that the devices they're playing on is laggy? If you guys can't implement the undo button then this seems like the better option.