Well, just finished the Outer Worlds on Switch.
The game itself is now retroactively my GOTY for 2019, and while the port itself was rough, it was playable and didn't ruin the game's core greatness. Hopefully the incoming patch redeems it a bit, as right now it seems like it's been written off as crap just on the basis of Digital Foundry and cherry-picked screenshots of it at its worst.
Just some kind of Nintendo take on the FPS genre, just as Splatoon was their take on the TPS genre, would be an intriguing proposition to me.
And I don't mind too much to be honest.
All I can think of regarding a Nintendo take on the FPS genre is this fanmade Mario FPS from a while back.