For me it needs to: be able to play any game I want, have a good battery to last about 10h, have a great ergonomic controller, be sturdy but light, and include video apps so I can watch downloaded content.
I was hoping Sony would make a new PSP type of device to pair with the PS5 but unfortunately the one they will be releasing is only meant to be used over remote play rather than running games on its own. I'd want a handheld that has an OLED screen, at least 1tb of space, ships with Windows 11, capable of running AAA titles, feels good in the hands, lightweight, and lastly it'd be cool if it had a magnetic accessory feature so for instance a better speaker could be attached or perhaps a camera.
Mine would have good battery, very good specs, comfortable, high quality controls, be able to play any game, well optimized OS, as well as being light, and having lots of ports.
I honestly think I'm fine with the current power level of the steam deck. I have enough of a backlog to get through that not getting to play newer games would be fine. I just really want a solid 8 hours of battery life on those newer games (think elden ring) when it currently seems to be at 2 hrs.
My dream system would continually recharge itself while being played, have the same performance as a water-cooled desktop computer, have great performance when plugged into an external display, be very durable, be upgradeable, and be able to play all AAA/VR titles.
