I've just been making an image with many stacked layers and different objects.
It would be nice if Gimp would allow layers to be put (hidden away) into sets, like IIRC some 'other' graphical programs can do. This could be no more than a simple container, an expanding/collapsing folder-like structure without any real functionality, except perhaps for a visibility setting acting on all members (like the eye, but for all layers in the set).

I imagine you probably had some similar requests already, but a bugzilla search didn't turn up anything, so...

Thanks for your time.