Apart from the obvious performance uplift what improvements are left that you would like to see in a Deck 2?
For me there is:
- 
VRR support 
- 
Hall Effect sticks 
- 
Make the battery easy to replace 
- 
Move the SD card slot to other half of shell 
- 
Move USB-C port to bottom 
- 
Further reduce bezel and increase screen size 
- 
Add real haptics 
- 
Add Oculink and eGPU support. 
On the software side I’d like to see:
- Improvements to the verification system to better incorporate user reviews and give more detailed feedback on what does and doesn’t work + expected performance
- An official way to share game settings, An easy way to install non steam apps from Gamemode
- Improve the desktop mode experience.

I think the Steam Deck Oled has everything I was wanting for a future Steam Deck
The only thing would be more power and more resolution.
Well, also an improvement on the back buttons, so they are more comfortable