Allow multiple heaters/coolers and a custom output scale?

[mairas]

I have now set up smart thermostat to control the temperature radiator valves of several radiators in a room. This works pretty great and is already a definite improvement in heating quality. However, the setup is slightly more complex than I feel is necessary. The smart thermostat controls a number entity and then there's an automation that scales the number entity value and sends it to the radiator valves. I think these two additional steps could be omitted by allowing multiple heaters/coolers and providing settings for output scale min/max values.

I already had a look at the code and the changes should be fairly simple to implement. What do you think; would these be useful features?