[UI] ~ "+ New Collection" option to create sub-collections inside empty collections

I opened a task on developer.blender.org (read here: developer.blender.org/T73821 ) thinking it was some kind of a bug, but I got dismissed with a somewhat confusing reply from the staff. And they suggested I should post it here.

So, apparently it is a design choice, that you cannot create a sub-collection inside an empty collection through the "M" (Move to collection) shortcut.

Honestly, I find it very annoying and it surely breaks my "flow" when managing a scene, that I have to scroll through the outliner, find the right collection, right-click to create a sub-collection and only then I can hit "M" to move the objects.
On the other hand, if the collection already has at least 1 sub-coll, then you can go straight through the "M" menu, to create a new one.
Nonsense!!

If my point is not clear, the task on developer.blender.org contains screenshots that better explain what I'm talking about.