Here's the real world scenario that started this thread, takes a bit of explaining, though it's not that complicated:
I often build presets with four scenes at different levels of gain, each tweaked how I like. The other four are each based on one of those, with some combination of effects added.
Lately I've been experimenting with a drive block before the amp, each channel tuned for the same channel in the amp block. That drive block is off in all scenes, with a footswitch to turn it on, effectively doubling the number of basic tone channels, before adding any effects besides that drive.
Thing is, sometimes a drive tone I like involves pushing the amp input, which can make it louder. I'm looking for ways to turn the output down after the amp to compensate.
Scene volume wouldn't work to compensate for turning the drive block on, different amounts in each scene.
The simplest answer would be a post-amp EQ or volume or filter block that turns on and off at the same time as the drive, whose channel follows the amp and drive, which I could use to manage volume.
The feature discussed above, control switches that keep their state separately in each scene, would be perfect for this use. Any scene where I turned on the drive block and its companion volume compensator would remember, because the proposed sticky control switch would keep its value.
I like it. A bit trickier than I wish it was, but doable with that feature.
If anyone has ideas on how to get the same result with the current feature set, I'd love to hear em.