The ability to set the visibility of an entire group of layouts at once (and/or organize them into folders) would be super useful.
to use my case as an example-- I'm making a seasonal menu, so being able to tell all three layouts that go into each seasonal variant 'turn on at x time of year' at once (as opposed to going and setting visibility requirements individually) would simplify the menu a lot and make for a much less time-consuming workflow.
This could apply to any other use case or menu function that utilizes multiple layouts for ease of organization, though (which is already a lot more practical than it was now that we can set layout index :D !)

I thought this was a previously suggested feature, but searching the discord isn't giving me any hits, so I'm submitting it as a proper feature request now.

Do visibility groups apply globally? That could be another solution, maybe

this can be done by depending on a variable & then changing the variable