A fellow of mine from Smashboards made some comments about how likely the Smash 6 job listing was for a "definitive" NX game that was co-developed as the times went on, which opens up the possibility of new characters added to help increase appeal of the new game, which if launched alongside the NX platform, could help push sales. The idea that characters that became Mii Costumes throughout the Ballot phase, like Geno, King K. Rool, and the Inklings could be foretelling their inclusion in the next Smash iteration if this NX version has been in the works. It's clear that Bayonetta must have been worked on and also negotiated during the Ballot while it was live, possibly giving credibility that some Mii costumes of highly requested characters were at worst consolation prizes and at best a sign of what's to come.
I can't get re-hyped for K. Rool in Smash (even if he's a "If you can't have Ridley" to me), I have a feeling I will be let down again.