Do you think it’d be fun if, for some reason, they remade the gen 1 and 2 games again and they made regional variants for some of the new Pokémon? Or even a regional variant for some new Pokémon that got retyped to fairy as their original typing? Maybe a fairy/normal Clefairy that even has the original light pink color scheme way different from the much more vivid pink clefairy we have today.
I’m not sure what you mean by the “original light pink colour scheme” – Clefairy in generations VI and VII is a noticeably paler shade of pink than in II through IV (especially II, where the sprites would, I think, be best described as “shocking pink”). But as a general principle, I guess sure? I’m decidedly unconvinced by the idea of re-remaking generations I and II, but if you were going to do it, details like that would give the exercise some point.