I too would like to know what doesn't work so far, besides vidéo HW acceleration (and now, audio). Among other things for example:
- Do Thunderbolt 3 ports work?
- Does the front SD card reader work? If not (incompatible PCIe version), is it removable? i.e. to be replaced by another internal card plugged on one of the USB headers on the motherboard.
- Do put to sleep and awake from sleep work? And without sluggishness?
About wireless features. The Hades Canyon has an Intel Wireless-AC 8265 card that supports 802.11ax 2x2 MU-MIMO (802.11ac 2nd gen) and Bluetooth v4.2. It is my understanding such card is removable and put in an M.2 slot. Due to the fact it is advertised as "2x2" I suspect there are only two antennas, reaching max speed of 867 Mbps. I assume the intel card is not recognized by macOS (as always with Intel wireless chips).
If all these wireless hypotheses are true, does a Broadcom card BCM94360CS2 + M.2 (NGFF) to mini PCIe adapter fit in there (enough space and antenna cable length), and does it work? And finally, if all previous ifs are ok, do Continuity features (Handoff, iMessage, camera, etc.) work?