Megas aren't being removed. At the very least, the Mega Evolutions we can use now are still going to be accessible, and there may not be new ones.
Masuda confirmed back in April when he was on Pokenchi that Mega Evolution would be returning in Sun/Moon. That much is confirmed.
Not making new Mega Evolutions, though, is ridiculous. I'm aware it's a possibility, but GameFreak would be really stupid not to make new Mega Evolutions. When he was on Pokenchi, Masuda was asked about Mega Evolutions for Greninja and Weavile, to which he just shrugged. Not only that, but Masuda was mauled by angry fans after the release of ORAS, upset that there wasn't a Mega Flygon.
They are aware the fandom wants more, and they shouldn't ignore that.
>>28043404That's what Dazzling is for.
