Now that you mention it...basically every other newcomer that people actively want for the game can't be used to promote any new releases. Ridley has nothing (probably won't until at least E3), Little Mac has nothing, Palutena has nothing, Takamaru has nothing...even though he's more expected than wanted, Pac-Man doesn't even have any new release onto which to latch. Sure, they all have games that could be linked to their profiles, but in terms of when they can be stuck into Nintendo Directs, I don't think we'll be able to guess based off of new releases.
Right now, other than Dixie and inevitably Mii once more Wii U shovelware comes out (maybe Chrom if he's in that new Fire Emblem fighting game I know nothing about), newcomer promotion opportunities seem quite limited.
Right now, other than Dixie and inevitably Mii once more Wii U shovelware comes out (maybe Chrom if he's in that new Fire Emblem fighting game I know nothing about), newcomer promotion opportunities seem quite limited.