Instead of having to toggle every individual system that you want active/inactive, it would be nice to have them grouped into named subsets.
For example, say you have a large ship and do not want to scroll past 128 "interior light" entries, just group them all into "Lighting", and keep that group shrunk to its title. If later you need to switch off only some lights, expand the group and select the ones you need.
Or if you want to turn off all your engines except for a minimal "maneuvering thrusters" set (one small engine pointed each way). Allowing you, after you have finished your fine maneuvers, to re-engage your main engines and speed away.