I had a super vivid dream last night about the next Pokemon games - called “Arid” and “Frigid”. The concept was biodiversity between two extreme regions that allowed the same Pokemon to have not one but two very distinct regional variants in the same region - one cold, one hot. The gimmick was bringing back tri-battles, but the same Pokemon species would have 3 different typings of your standard triangular system -one weak, one strong (or closest possible). So like a fire Pokemon would have a water and grass variant, and a Fighting Pokemon could have Ice and Flying. The upper portion of the region was mountainous tundra with heavy water and snow motifs, and the south was a lush desert with beautiful floral cacti. In between was the common “flatlands” that would have your normal variant Pokemon.
Anyway I had the whole thing planned out from start to finish and the only detailed thing I can remember when I woke up is the stupid grass starter Dillerpillar