I'm pretty sure he'll add more characters, just not a lot more.
I mean I think it'd be kinda silly if he didn't at least add another Kid Icarus character.
Though this may greatly lower the odds of Roy, Mewtwo, Dr. Mario, and Pichu returning....unless they're somehow part of his "reworking characters" plan.
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No need for words,
Just cast Luminaire and be done with it.