Making me more glad i never had plex. DLNA ftw!

I have GE 3-way switches and love them.

I forgot the name of the app, but in hubitat, there is a mirroring option, so realistically all you’ll have to do is connect the main switch properly, and run the power to the extension switches (no need for traveler). Then in the app, it’ll mirror the status of each switch to the others, so if you turn on from one, they all turn on. If you dim at another, they all dim. Easier to work with than using the actual add-on switch, but also more pricey as its using all smart switches.