Create channel groups.
No new features on channels, only graphical collapse on these groups.
Dillon Ohrt commented
I've seen that this exact idea has been posted before, back in 2018, and declined at that time. What's essentially being proposed is one or more definable "hidden channels" files, e.g.
I hope that restarting this will start to get some attention by MS, or at least an explanation on why it's being declined.