One impor
The thing is, Charizard still takes 50% from rocks because it isnt mega-evolved when it comes in.More on less talked megas.
Gardevoir though more offensively weak then a normal item can still become and offensive power house if it gets a good switch in to a fighting/psy/dragon pokemon to calm mind and attack making use of the 100 speed on the next turn.
Even with weather nerfs Charizard Y can still be useful in weather teams as it acts like a better Ninetales starter as it to can also know Solar Beam. Worst case scenario Charizard can still be switched out and the Drought can set up Venasaur.
If Blastoise Mega Launcher (50% more damage) boosts Hydro Pump and learns Dragon Pulse/Aura Sphere we could see it as well.
Abomasnow losing leftovers and trading away 30 speed for 130 more stats in other areas give it great bulk and power to do a better job at what it already does: Sub Seed and Mixed Attacker.
On an unrelated note you would think M Absol would gain flying or fairy with how it seems to gain wings.