Ok, now I kind of want this. I only have my PC connected to the TV, so I only need the power button, volume controls, settings and the D-Pad. A specialized cover would make hitting the right buttons in the dark much easier and also remove the ads disguised as buttons.
Kind of.
The big thing that actually defines FSR2 is that it has access to a bunch more data, particularly the depth buffer, motion vectors, and also, as you said, uses data from previous frames.
The camera jiggle is mostly just to avoid shimmering when the camera is stationary.