More DLC for Smash bros. 3ds/WiiU

So, I was having a conversation with some of my friends at school the other day. One of them had, finally gotten both versions of Smash. He was happy to get the code for Mewtwo and that's when it hit me. Why doesn't nintendo try to get more third party collaborators and create some separate DLC fighters. There would be an update before this event happened that makes you have the textures for the characters, but does not allow you to use them. This way if someone else has a DLC character they could use it without having to stick to staying with the defaults in local or online play. So my question is. If Nintendo were to convince more 3rd party players to fight now, which players would you like to see? and do you think your character could be a strong possibility?