>>58975448Hoenn, Sinnoh, BW2 Unova and Alola have a small carefully picked selection of returning older mons found in the wild, instead of having 70% of the existing pokemon just dumped in the grass like Kalos, Galar and Paldea.
This greatly helps the region have an identity.
It allows the new pokemon to feel blended in the franchise (unlike BW1 where they felt fake) but without entirely drowning them in a sea of older pokemon.