I don't know, these new lands just don't feel right to me.
Mystic Point and Grizzly Gulch just seem to have only 1 main attraction, unlike Fronteirland, Adventureland, and Tomorrowland which have several attractions to keep the area alive. They're more like mini lands. And Toystory Land looks like a carnival with theming, kinda like Dinoland at Animal Kingdom.
Idk, maybe once they're built, they'll add more to them as time goes on. They sound really cool, they just need more substance.