remember, this could be Johto 2.0 meaning we get 95% Unova pokemon until postgame.
I wouldn't say that, Johto was actually notorious for having lots of Kanto Pokémon in it. I mean Slugma/Magcargo, Houndour/Houndoom and Murkrow were unavailable until you reached Kanto and Misdreavus only appeared in Silver Cave.
"The fact of the matter is that we've been here constantly. We've been betraying peoples expectations, in a good way, for a long time."