I can say that this is quite a tricky question since I was not quite happy with the current approach nor with the old one. Because it's not always I want to expose my internal file structure to everyone. The reason is plain and simple - I used to work on the bunch of options for a single screen at the same time, while I want to showcase just one of them. While working on all of the iterations I don't want to think about how it will be presented to anyone. That's my personal kitchen, as you wish. But I can still see how that visual way of the screens structuring helps to navigate in a big project.
If Adobe wants so hard not to copy features from the competitors, they might think about some sort of a tool, allowing to visually put the artboards into the groups right on the canvas. Like a super-artboard for the actual artboards. Anyway many designers like to arrange the artboards in a certain way and place the titles right on the canvas itself.