@Riley_S 

I can understand the hoops if you were trying to design something like the KS230 main & satellite dimmer but with energy monitoring. No need to overcomplicate it. I'm sure most would be fine with the ability to only dim from one location and use a standard 2 way dumb switch at the other location. I'd bet most primarily use use voice command or the app to control them anyway.

As far an energy monitoring a switch, wouldn't that be similar to a smart plug with energy monitoring? Instead of using the plugs hot (receptacle side) to calculate the energy you would be using the switches load side.

A 3 way would be the same but a little more tricky with the additional circuitry for the the traveler needing to be placed prior to the energy monitoring.

The only requirement would be needing to be installed at the main switch location but that is no different than using a single HS210 and a dumb switch.

Thank you for the response and inquiring about it. I look forward to hearing what they have to say.