Casting through the USB C connection.
Casting out to USB C would be great until you have more reliable casting through the phone (also not possible at all for enterprise which is a real friction point for adoption) I'll take any short term improvement to casting until you find your final elegant solution
Side quest recently got an update that allowed this to your computer via USB or wireless, it works great and I'm sure. A first party solution would be snappier.
Christolpher Yarbrough commented
If Oculus made an app for casting to PC without any special driver, or command line commands would be nice. If video could go strait form the USB C on my Quest to HDMI on my TV that would be great
You can already do that by enabling developer mode