So recently Nintendo has really been diving into making crossover games with their most populair titles. Lets take a look.

>Pokemon Conquest
>Hyrule Warriors
>Bayonetta with Mario, Zelda, Metroid and Fox costumes
>Link and Isabelle in Mariokart.

Lets get that creativity flowing /vp/! What would be a great crossover idea for pokemon?

Personally I think a dynasty warriors/pokemon crossover could have some potentional.
>keeps have swarms of first stage mons with occasional second stage
>keep bosses are the third stage of those mons
>end bosses are legendaries

you could nicely put pokemons elemental system in the game.