Hi @Dave_Blanchard, if you want to create zones inside your home, I have created a smartapp for that… See the thread below:
You can define a master thermostat which controls some room thermostats (slaves)…
I don’t think it will fulfill all your requirements, but a good part of them.
Regards.
P.S. I’m currently testing a variant of the above smartapp with smart vents, and it works very well… Smart vents are optional, but they provide even more comfort inside your zones…