Thank you @oberkc and @larryllix
Appreciate the replies. Will just use scenes to implement my strategies. I don't imagine I'll be adding a ton of infrastructure to the system once it's all set up so that will work.
I organize my devices the same way, floor/room/location, i just wish there was a way to say: "bring up all the lights in the dining room and living room to 30% at a 20 second ramp rate and bring down everything else to 0" in a few lines of code rather than very lengthy scenes. Certainly doable, but not easily changeable without hundreds of mouse clicks. Can't even copy/paste the code...
Re the ramp rate - I learned that after some trial and error. Setting the ramp rates on 30 switches in a row, didn't get me the desired results. A test program with a single ramp rate set and then a 2 second wait works great, but not for a large group of switches. Now I know why...
Thanks again