Personally, I would really like to see Valve add a video capture feature. Like how on Xbox and PlayStation, you can press a button to record the last 30 seconds of gameplay. Something like this is almost impossible to do conviently on Steam Deck and just Linux systems in general. Valve adding it in natively to the Steam UI would be absolutely amazing.
Anyway, what features or improvements would you like to see on Steam Deck?
On the hardware side: -Better battery life -Nicer screen -EGPU support for docked gaming
On the software side, there really isn’t much. The UI could be a bit smoother sometimes, but it’s pretty good. I’m quite pleased with the software features, it does what I want it to do.