I've mentioned this before, but I would find it difficult to resist a gameboy-style x86 handheld with all the x-input/modern gamepad controls and a 16:9/16:10 aspect ratio.
I wouldn't mind if the device was just a little bit taller/thicker to accommodate better thermals/battery, and even sacrifice some horsepower in order to reach longer playtime and better thermals.
These exist in the arm platform, something like this:
Though it's more feasible with arm due to its smaller instruction set and overall power requirements.
I've toyed with the idea of using a raspberry pi form factor x86 SBC like a Rock Pi X and a shell like PiBoy DMG kit, but never went through with it because of all the issues I'd have to overcome or come to a compromise with; pricing, aspect ratio, potential customizations due to small differences between rpi and rock Pi, availability of parts, etc.
I just think I'd love that form factor as long as it can get me 3-4 hrs battery life on older/indie games.
Even though the rock Pi X is an Intel z8350, I've run vanilla wow on such a chipset and had a very playable experience. So my vision would be sitting down on a Gameboy-like device playing vanilla wow using the consoleport addon ๐คค. Or playing some older COD games, java Minecraft, stuff like that.