And this is why its stressful, Wolf has huge fan demand, it looks like he was planned for the game, his series is getting a new game, and apparently the devs really like him, so it gets really annoying when he just gets pushed aside for other characters.
As for the third parties, I honestly don't think we'll see more, as if this leak is true, then we'll have 4 third party characters, 2 from the same company, unless one gets a ridiculous amount of votes in the poll, and even then if its someone like Shrek they probably wouldn't do it, they probably have a few limitations on third party characters.
A couple of things.
1.) The poll is a popularity contest that is meant to inform Nintendo of whom the fans want. The final call is still Sakurai's, and there is no guarantee that any of the top 3-5 most voted characters will even get in.
2.) I don't really believe the leak at the moment. I will continue not believing the leak until I hear it from sources that I actually trust. I'm not saying it's fake... I am just saying that I have little reason to think it's true. Why would Nintendo include this data so early? Lucas isn't even out yet and Nintendo knows that we datamine their patches and updates.
The only thing that would make sense to me, if this leak is true, would be Lucas, Ryu, and Roy being released at the same time... perhaps as a pack. It would explain why Lucas' price hasn't yet been revealed. (Also, Snake/Bomberman/Wolf/K. Rool bundle for E3! Let me dream!)
3.) I still can't imagine Wolf not getting in. He is super popular and easy to implement. I have a feeling that if we don't see Wolf by E3 that the number of votes he will receive in the ballot will sky rocket.
4.) I would be super happy to have Roy back. It would just be strange to see him without Wolf, Squirtle, Ivysaur, and Ice Climbers. Still, Roy's my boy.
5.) Seriously, vote Bomberman/Simon/Snake if this is true. It would mean that there is no strict "one third party character per company rule."