Many of us have faced this problem, obviously. I had a ceiling fan that I very much wanted to control with Hubitat, and I got the Maestro fan controller for it. What I did was bury an Aeon Micro Switch behind the fan controller. Effectively, this gave me a way to turn the fan on and off through Hubitat automations. Doing this meant that the Aeon had to be on to adjust the fan. This particular fan was always at one speed, so that wasn't really an issue. It worked for my needs, but is obviously not a complete solution. I wanted the Maestro controller for uniform look with the Caséta devices in the same wall plate, and elsewhere in that condo.
(I sold the condo about a year ago, leaving a running Hubitat system behind. The new owner took my brief set of instructions, and figured out the whole system on his own. It ran without interruption or update for about 10 months. He finally contacted me when one Zigbee motion sensor needed a new battery, and it wouldn't rejoin. I told him what to do, but he reported that it just started working on its own. He's a happy camper.)
