Thanks, that's good info. HE does support SSDP, but I have no clue if that's an option for something like this. If it's not possible, then you are correct, HA on a computer (which I have running) or RPi combined with a yet to be developed, but apparently possible HA > HE integration would be the answer to that issue.
To be clear, I would for sure benefit from a HomeKit Controller integration on HE, but it would be an addition to my setup, not my primary means of getting HomeKit enabled stuff or Homebridge into my hub. I'm an iOS and Mac user, so I use an AppleTV and HomeKit automations since I benefit from the iCloud remote connection and one of my Yale door locks is HomeKit enabled (because why not? 
It's close to the Apple TV and it was a good price). And that's not ideal either. There are limits. No variable sensor data. No control over bulb dimming or color from HE.
This ask is for the Hubitat community as a whole. I've been here since Feb of 2018 and on ST before that. In that time and continuing more and more with new users are the requests for devices that don't have HE direct support yet, but I know there's support through HomeKit, or there are plugins for Homebridge/Hoobs which will get them into Homebridge or Hoobs, and thus HomeKit Controller for direct device control and status in HA. I hope it's not a pipe dream, but as you point out, it can be done using HA as the bridge. Just would like to see something less involved than also configuring MQTT or Node-Red to connect the two in the HA > HE direction.
