This is somewhat off-topic, but, it is an Ubisoft related question has Ubisoft ever developed a Nintendo game from some Nintendo franchise before? It just hit me that all the third party companies that's being represented in this game has developed or co-developed at least one Nintendo game from a specific franchise.
Capcom developed three Legend of Zelda games: Oracle of Ages and Oracle of Seasons, A Link to the Past and Four Swords, and The Minish Cap
Sega developed: F-Zero GX, Bayonetta 2
Bandai-Namco developed: Super Smash Bros Wii U/3DS of course and also StarFox Assault which also has a stage from that game.
We know Nitntendo developed Rayman Legends in Japan but what about Ubisoft have they every developed a game for Nintendo like the other companies, if so what franchise is it but if not I can see them developing a Fire Emblem game with Monolift Soft or maybe even a Metroid game, seems like good match ups. Those two franchises seem fit with something Ubisoft may want to work with, especially if you look at some of Ubisoft's own franchises that look like they're somewhat inspired by Metroid or Fire Emblem. It could soften Nintendo's and Ubisoft's relationship if they had a hand at one of Nintendo's IPs.