I did design a concept for a Mega Dunsparce a while back, i don't remember the exact stat distributions but i remember: It has some sort of Orb that it will use with it's new ability Protean, this is because it has a quite impressive movepool. It's speed gets a drop to 5 thanks to the Orb and i generally tried to keep it's def and sp def pretty good not sure what i did to at and sp at though.