Overall I really like the interface, but there are two things that would make it amazing:
I don’t know if this is technically possible, but it bothers me that I can’t access the dimmer control for a group via a switch the same way that I can for those individual things. If switches had that second level the way things do it would be great.
Opening to the home screen, then either things or switches depending on what I need to control feels slower than it needs to be. Personally I would like to open the app and first see what I want to control with the option to go to settings, and those separate areas. And by “what I want to control” currently that is a mix of things and custom switches, so a unified home screen where I could select specific things and switches to display there or have an option in each thing or switch to “display on home screen” would be ideal.