My question I ask is all in the title of this thread. I also ask that everyone gives a fluent, detailed answer of their Mega Evolution idea, along with the benefits that Pokémon would receive, and an optional picture or link to the picture of what the new Mega would look like. Example (using a Mega that already exists): I think we need a Mega Aerodactyl, because it's's the only fossil Pokémon without an evolution. It could gain some more speed and attack, earn the ability 'Tough Claws,' and have some black rocks on its back. *Insert Mega Aerodactyl pic* Thank you everyone for taking your time and doing me this solid. I might actually post what should be a Mega Pokémon some time, so stay tuned.