>>33502221That's such a massive restriction.
Why would you limit yourself to 100% new Pokémon for the region? That kinda defeats the whole point of regional variants.
Especially for those Pokémon that don't originate in that generation's region.
Any and all should be on the table, save legendaries.
Especially when we started this design modus with ones like Rattata and Vulpix. Two Pokémon that are found in nearly every region.
Gen1 pandering aside, regional forms should be used to fit in with the flavor of the region. (Alolan Marowak or Exeggutor are probably the best example of what I mean.)
So long as that Pokémon family doesn't originate in that region(gen), have an evolution linked to the region, or is a legendary: they should be able to have a form.
(I'd also say mega evolutions need not be regarded as the same as a proper evolution.
So....
>no Sinnoh Togepi line>but Kaloan Lucario would be fine) 
