Besides the Retro Studios-developed Metroid Prime series, we’ve really never seen a first-party first-person shooter come from the Big N. The announcement and release of Splatoon was commended by Nintendo fans, due to the fact that this was a new IP and a new genre from Nintendo.
Seeing another new property in a first-person shooter would be rad to see. It wouldn’t have to be a cartoony multiplayer shooter either, as Nintendo could create a mature series of characters to fill in the role. Nintendo usually doesn’t develop video games with realistic violence and/or visuals, and I for one would like to see their take on that.
Competing with Call of Duty, Battlefield, and other popular FPS games would be tough for the Japanese company to do, but if the game has that Nintendo charm still in its heart, then it could surely succeed in a crowded marketplace.
You could even throw the Mario characters into a Paintball game full of different battle arenas, weapons, and game modes –whatever it takes to see a first-person shooter.
Even the turn-based strategy RPG, Mario + Rabbids could be converted into quite the entertaining shooter. Team Rabbids and their gang of crazed bunnies versus Team Mario and his Mushroom Kingdom allies.
There are too many possibilities to think of, but I’m sure that Nintendo will realize that this genre is missing from their catalog and eventually come up with something… or they’ll just give us Metroid Prime 4 and call it a day.