It just occurred to me that the Switch 2’s MouseMode could be the only control method that the Steam Deck is “missing.” I would absolutely love to be able to play DOOM or Halo: MCC or Overkill from the couch. This would be the only thing I’d like more than the rumored Steam Controller 2 design.
Couldn’t you just use any wireless mouse? It’s not like the deck is limited to only controllers.
Or is the idea that you want the left controller for movement, rather than using the left controls on the deck or a full controller?
That said, I’m sceptical that the joycon mouse experience is any good on surfaces other than a table. Or even then, considering the ergonomics of the thing when used as a mouse.
Even if the sensor in it is a good one, it’s going to be bluetooth, and bluetooth mice have always had painfully noticeable latency in my experience.