User blog comment:Mr.123/Agent Artifact Challenge Three: Bountiful Times/@comment-3270170-20171108012640/@comment-24588058-20171109034545

As cool as Z-moves are, they're kind-of a one-shot attempt. I much prefer Mega Evolution, which lasts throughout the battle. I do wish they had stuck with just Mega Evolution for another generation. I'm surprised they didn't come up with alternate forms before, to be honest. Not in as big a degree as they did here, but one or two ideas that make sense. Kind-of like how Shellos have different forms depending on which side of Sinnoh you are at.

I don't know that they'll rid all of it. They added Megas to OmegaRuby/AlphaSaphire, after all. I wouldn't be surprised if they included Z-moves in the remakes. But if I'm being honest, Z-moves are kind-of an Alolan special thing. Seeing as only the Island Guardians can give out the rings, it makes those very difficult to translate into other regions, unlike the Mega Stones, which could simply be "discovered" anywhere.