>>353626890
The Steam Deck APU seems to perform a fair bit worse than GTX970 but lets for the sake of argument say that they can match or even slightly exceed that performance via fov rendering, sharpening trickery, OS optimizations and hardware tweaks that somehow don't set the headset on fire.

A 970 barely cuts it anymore on an old Rift S with it's lower FOV, resolution and shitty 80hz. It would work for something like Beat Saber and I'm sure Valve would modify Alyx to run without stutters but many games will require dropping the resolution down below what the CV1 has and you can hardly go much lower with the framerate. 

Would that kind of low-end-PCVR tier standalone experience be enough of a selling point to justify development cost instead of a simple wireless Index?