It would be great to be able to grab all emitters and take them to a level, most commonly, 0 or 100.
For Subtractive CMY, this is an easy enough macro to make since it's 3 parameters but for additive mixing there are so many emitter types that you can run into that you would have to regularly update this macro or seek out every common emitter type. It would be really helpful to be able to say Ch 1 emitters/flags @ 0/100 or emitters/flags HOME
Selecting Color will often grab color parameters you don't want to adjust - eg. color temp, color wheel, etc.
Even if this were just implemented to be used in "common macros" in the editor and not an adjustment to the CIA Parameter tile window, I think it would be very useful.