What would you Wish for if you wanted to make your DM cry?

[Eldan]

I wish for the party members' stats to be switched as follow
Str score becomes your Int score and vice versa
Dex score becomes your Wis score and vice versa
Con score becomes your Cha score and vice versa

now nearly everyone is playing an unoptimized build ;)

Actually, in Planescape, that is almost what happened when you went to the Astral plan. Your mental stats replaced your physical stats, in that order, but not the other way round...
There was a quote about the wizard arm-wrestling the barbarian.