Valve cares about battery life and user experience more than just raw power, and after watching multiple other handhelds deliver very insubstantial improvements over Steam Deck OLED at 3x power consumption, I tend to agree. I'm convinced that SD2 won't happen until measurable improvements at the same 15W power limit the current Deck has. There are plenty of older games and indies in Steam catalog that play perfectly fine on Deck, and chasing the latest power hungry UE5 juggernauts is a losing proposition.

One thing I wouldn't mind having on my Deck is FSR4 support, though AMD still hasn't submitted their Vulkan FP8 support proposal, requiring unofficial Mesa hacks to enable it even on desktop Linux.