I’m not sure if this has already been suggested somewhere, but I wonder if it would be possible to activate some kind of second bank of 6 layers on a C1500. For example by pressing a layer button for 3 seconds (maybe individually adjustable). Especially if the monitors are made by FOH with split channels, 6 layers is a bit little and I thought this would be an easy solution.
You can use scenes for that. Create 2 scenes, block everything except strip assigns in recall filter. Bind softkeys to fire these scenes if you want.
Just dont forget to update the scenes if you change layout.