In our localized template made by our local Graphisoft partner, we have a layer combination that is named "ALL ON." However, when a user creates a layer... It's not automatically ON on "ALL ON" layer combination. Also, we cannot tie the whole folder with layers inside to a layer combination. Meaning, if we have a MEP layer folder, and we want to turn on all MEP layers with a layer combination, we have to look for newly added layers to make sure that they are on in the previously created layer combination.
What I'm suggesting is something similar to this:
It would mean that this folder's content are ALWAYS ON on a specified layer combination, whether it gets new layers later or some layers shuffled around. Maybe the "lock" icon I drew isn't perfect because on the right side, it would also need a "LOCKED lock" which might be confusing, but this graphical representation of the idea is the first thing that crossed my mind.
Open