>>55655467Personally, I liked how in the anime they used substitute Pokémon for specific fauna/flora until that Pokémon was created, I liked that type of retcon, they didn't feel forced and they enriched the world-building.
The most classic example was Santa's Ponytas, until Stantler was created.
I always wanted them to re-animate Misty's aquarium now populated with pokemon from all regions.