No Pokémon 20th Anniversary collaboration??
Why Yokai Watch? I know it is literally EVERYWHERE in Japan because I saw it when I was there in Matsuyama, Osaka, and Kyoto (my girlfriend lives in Matsuyama and I was visiting her). Pokémon has a lot to owe to Final Fantasy. Elemental attacks (Blizzard, Fire Blast, Thunder), items (potions, revives, etc.), and such.
For a Pokémon collaboration event, we could get the three Legendary Birds (Zapdos, Moltres, and Articuno) as flying mounts, have minions (Kanto starters Bulbasaur, Squirtle, Charmander, Mew, etc.) and weapons based on some Pokémon. The possibilities are endless. So, Pokémon or RIOT?