LEGO Legend of Zelda seems like it would be a lot of fun to me.
Wario & Waluigi: Kingdom Battle
Maybe a dungeon crawler or 'traditional' i.e. non-strategy RPG based on Fire Emblem, though I'd rather see Golden Sun rebooted.
Paper Luigi - based on his adventures during Thousand Year Door.
Not quite a Nintendo spin-off, but a game set in the Game of Thrones/Song of Ice and Fire universe but which plays like Fire Emblem would be right up my street. Maybe call it Thrones Emblem and get Intelligent Systems to make it.







