If what he is saying is true, I think is likely there is going to be another Nintendo fighter, well, maybe Geno can fit as a dual Nintendo/Square fighter as he is owned by Square-Enix but part of a Nintendo IP (Super Mario), so a potentially Geno Mii Costume Round can be Mallow hat, Chocobo hat (Smash 4 returning), Sephiroth or Chrono costume (from the seven Square leak, “fan demand”Googi hat and Waluigi (Assist Trophy promotion)
There is a pattern with the last 2 fighters mii costumes round
1-3 are from fighters IP (Ninjara for Arms and those 3 minecraft costumes)
1 is a returning smash 4 costume (Heihachi with Min Min and Gil with Steve)
1-2 are assist trophy promotions (Marie and Callie with Min Min, Bomberman with Steve)
1 is a fan demand fighter (Vault Boy and Travis)
They were also presented in the same order so I think that is something to take into account.
For Geno’s case as I said:
- Mallow and Googi hats for Super Mario IP costumes, one from Square and the other from Nintendo
- Chocobo hat for smash 4 returning
- Waluigi as assist trophy promotion (yeah I know that there is a Waluigi’s hat but they can try a bit better)
- Sephiroth, Chrono or another popular Square-Enix pick like 2B as “fan request” costume.