I wanna see some small aesthetic changes to existing pokemon depending on the region you find them. For example Pikachu will always have the trademark look from Kanto games but if you trade one over caught in Gen 4 it'll have a slight palette swap or something minor. Nothing to make it look drastically different just something to say, "Oh that one came from Fire Red or came from Diamond".
I'm going to Shaboom Shaboom's!!!!!!!!!