Volume as Lightbulb
Does HomeKit support Volume yet? It certainly has a speaker now.

Potentially how about using a dimmer switch, or make that an option?

You could use a dimmer switch to move between the inputs as well. e.g. 10% is one input, 20% another, etc etc.

Lastly, any chance we could have the option of just calling power "TV", or whatever we want? Closest I can get is "TV Power" 

Thanks v much.