I definitely think Aggron needed a Mega evolution, because it needed to get rid of its rock type and become the defensive behemoth it set itself up for
I think the pokemon that needed the mega evolutions the most were gen 5 pokemon. My main candidates would be either Samurott or Hydreigon.
Samurott needs better base stats, another type never hurts (ususally) and he could pull of some kind of a Mega Samurai pretty well, imo
Hydreigon didn't necessarily need one, but now with the fairy type im sure it would appreciate a type change or an ability that hinders fairy powers. And besides, if other powerhouses like Blaziken and Garchomp got one, it wouldn't hurt to make another powerhouse, would it? besides already having great stats, im sure it could become a top tier threat if applied the right way
3ds Friend code: 2879-0750-4270
I have a lot of pokemon. Willing to help out anyone that needs it, also breed, ask for a list
I am still not playing that much right now.
My living dex is completed for Kanto. (YAAAAAAAAA!)
Slowly staring on Johto.
If anyone has a surfing Pikachu or Nobunga's Rayquaza they could trade me (for keeps of course) I have many other events to trade back. just ask and I may have it