Ditto's market cant be a reason to break a sistem in game, since that its a pokémon like all others...
I mean, Ditto dont is unique to breed... then...
Btw, my ask is about Synchronize to uses in gameplay, not to breed at all.
You can get any natured pokémon in breed arounds 15k... its really easy and cheap to get... so, why nerf Synchronize?
It's usefull in gameplay...