I don't see anything wrong about fusion, that's a good idea. A fusion between Mew or Mewtwo and Blaziken, forms Rukario,lol an almighty pokemon. Fusion Pokemon are more stronger then common Pokemon. I want more cool PKM, I'm sick and tired of PKM that looks like a kid's drawing.
Imagine other pkm fusing, forming new and stronger pkm and new types of combination, imagine a Tyranitar fusing with Rayquaza, forming an almighty Dark Dragon, lol.