I recently wonder how can one use devices hooked up to HA in HE. At the time, the proposed way of doing it involved a lot of tinkering. So I decided to try a different approach. The result look to me much simpler.
With my limited knowlege I managed to cook up a driver that suit my need with the following qualities:
No virtual devices to setup except one for the parent device.
No automation on either side.
No man in the middle.
No individual setup for individual devices
As soon as a device is installed in HA it show up automaticaly in HE and it is fully functionnal.
Currently it only support on/off switch and plugs because these are the only things I have hooked up to HA (36 of them). All my real stuff is directly installed into hubitat.
It is too bad that nobody with knowlege seems to be willing to take this further because I think it would benefit people with less technical habilities.