as the former Pokemonexplain:

these are cool designs but would never make it in a pokemon game, the problem is that the design barely changes, they seem to only have more spiky hair if anything, while megas are famous for their overall design of the pokemon
Even if you look at Charizard Y, it's the same colors but the shape of the pokemon is different and more slim

while I see
Mega Emboar: This would be good with a few tweaks
Samurott (or whatever) : really doesn't change, more spikes but that's it
Snorlax: same
Delphox: same
Zoroark: so mega now means having a necklace...?
Torterra: Tree.
Empoleon: now this is a design that would make it in, solely for the "rule of cool"
Chestnaught: this looks like a downgrade, looks like what chestnaught would be if the actual chestnaught was a mega evolution
Greninja: I honestly cannot see what changed

The other two are how a mega would actually be, totally different from the original design


As DittoYourMom:
**** YEAH GOOD ****