Hell Bulbasaur was popular despite several years of not deciding if it was a Dinosaur or a Frog.
I also think the simplest way to circumvent the Ice area thing described would be to implement some kind of travel point or detour in the story, like how B2W2 has you cut through the middle of Unova part way through, or Alola having chunks with the Islands; Galar was in a prime position to do this with the Wild Area and potentially open-ended progression akin to what people praise mid-game Johto for opening. That or go further with Platinum's concept and just make the region at large relatively cold/up north so that a Snow/Ice area isn't an out of the way location geographically.
I also think the simplest way to circumvent the Ice area thing described would be to implement some kind of travel point or detour in the story, like how B2W2 has you cut through the middle of Unova part way through, or Alola having chunks with the Islands; Galar was in a prime position to do this with the Wild Area and potentially open-ended progression akin to what people praise mid-game Johto for opening. That or go further with Platinum's concept and just make the region at large relatively cold/up north so that a Snow/Ice area isn't an out of the way location geographically.