For me, I want one with internal rechargeable (and replaceable) batteries, more reliable Bluetooth, and multi-device targeting (ie those 1,2,3 toggles you see on stuff like mouse/keyboards - I use mine on my Steam Deck and also on my desktop - dont want to mess with pairing each time. Plus if I end up with with a Switch 2, the trackpad would be interesting for mouse mode if those could connect (no idea)).
For me, I want one with internal rechargeable (and replaceable) batteries, more reliable Bluetooth, and multi-device targeting (ie those 1,2,3 toggles you see on stuff like mouse/keyboards - I use mine on my Steam Deck and also on my desktop - dont want to mess with pairing each time. Plus if I end up with with a Switch 2, the trackpad would be interesting for mouse mode if those could connect (no idea)).