I want IGA, Ayami Kojima and Michiru Yamane to work on the next 3DS game. And make it with 2D gameplay with 3D elements.
IGA and Kojima might be on board, but Yamane has long since quit game music.
It would be amazing if they hired another famous Japanese composer, like Hitoshi Sakimoto.
And honestly, from MercurySteam I'd just prefer another 360 game, rather than what would almost definitely be a smaller, less impressive version of the same thing on a 3DS.
Also agree with Thernz. Hideki Kamiya just needs to work on every game ever.