>>32733076I think Alola itself is how they can get around that, it's diverse enough to have a spot for practically everyone
Ho-oh/Legendary beasts - Malie Garden
Rayquaza - Mt. Hokulani
Heatran - Wela Volcano
Regirock - Haina Desert
etc.
What they need to do is incorporate them into the story somehow
I like how Pokemon 2000 did it, where all the pokemon sensed some huge danger and they all came to try and help however they could
The Ultra Beasts invading could the catalyst for that, It was already kinda implied that Zygarde was there for that purpose