I actually think Mega-Eeveelutions are a good idea
rules are no legendary, but what about the "low cost" legendaries? such as Acticuno, Zapdos, Moltres, Entei, Suicune, Raikou, Regice, Regirock, Registeel? maybe not Mega Evolutions, since the concept is based on a relationship with the trainer, but maybe Primal forms? I feel like they need something to be revelant as legendaries
I don't think the legendaries needed a boost to begin with. Kyogre and Groudon having Primal forms and Rayquaza having a Mega evolution just feels kinda weird to me. Lol
They're legendaries. They're good enough on their own.