Yes my Fatsharks are a little old, that said not everything is HD. While we can get cameras that are HD, the cost of transmitting HD needs to drop. Also the equipment being discussed here currently doesn’t have video out in any sort. The UVC receivers Skydroid sell have Video out so you can port to goggles easy enough. But I am talking about the fully integrated system. It needs to have HDI out to handle the newer goggles.
Something to consider is this unit.
IT has 5.8ghz diversity with UVC integration. So it could be used in conjunction with this system.
It also has video out so it could be bunged into a set of goggles and an HDMi up convert would allow for HDMI goggles. However it means having to power it externally somehow.