That's the thing, though. I'd argue that it really hasn't!
The story goes is that they wanted to avoid having an "established image" for a Hunter, because the Hunter represents the player, and there shouldn't be any one design that's more "valid" than what the player themselves comes up with. In other words, not a Splatoon situation where the girl Inkling(s) are more prominent in promo art and trailers, have the edge in the series's established lore, etc. And while human Hunter designs have and still do pop up for collectibles and the like, we've never really seen anything quite like MvCI's "Monster Hunter" pop up since then. Again, not even in Teppen, and that's the game that even includes a card for "Morudomunto", a Monster that previously has only been in Monster Hunter Explorers (a mobile game that's not even available in the West).
Again, Teppen only seems to really emphasize the notion that as far as MH is concerned, the Monsters and Felynes are the real stars of the show. The human/humanoid cast is, and always will be, secondary.