The whole "unleash your pokemon's ultimate power" shtick is lame
I like regional forms, though
Before that was introduced I remember wishing that they'd introduce like an alternate version of
pokemon fusion website, akin to what they used to do in the TGC (ie, "Light Golduck", "Dark Espeon"), but more like how Shadow Lugia in XD had a radically different color scheme.
Most shiny pokemon are pretty bland.
Regional forms is almost that, but more fleshed out and not as widely utilized.
The only gripe I have with it is in cpu trainer battles where it'll say "So and so is about to send in Ninetales" so you think "Oh yeah fire-type, I'll switch to a water pokemon" and then the trainer sends in Alolan Ninetales and you're in trouble.