USB seems fine with 5.10.y as the WiFi comes back and also an external WiFi adapter is getting recognized and sees networks, what did you experience?
About HDMI, mine is running headless, but I will probably carry it towards a screen later and check
// well, anything HDMI related was missing from the orangepi dts so only uboot output worked, compared/copied from other A20 dts et voila, working hdmi output from 5.10.21-sunxi
// USB HID works, different WiFi dingle too, no issues here