Having a safe for each channel is great, but having the option of safeing a single channel per scene would be great to add to the flexibility of the console
I was just writing a request for the exact same feature, I hope it is being considered 
I made a theatre show recently, with a band playing across most stage-scene changes, so I never really had a moment to change actor and band settings simultaneous. Being able to put a Safe on band channels for some scenes, and on the vocals for other would be great!
Other than that, I really appreciate the enhancements made to the scene management for version 1.6.