In movies the increased bith depth of HDR gives (on my TV) better colouring but the actual high dynamic range (while nice in certain scenes) I really don’t care that much about. To translate this to games both points are moot and not a big deal so thats why I don’t care about HDR.
4K is just more pixels and at a normal viewing distance is just a waste of resources.
Spend the computinational power on better (smarter) enemies/environments more enteties (stuff in game) etc instead.