I think Github should really start taking a stance on convention, and come up with project structure conventions that would help project navigation. For example, youtube does that with chapters in videos, if you write a description with timestamps it will display these chapters in the timeline of the video[1].
IMO Github should do the same if you have a README in your folder, describing the folder with a certain syntax, then it should extract this info and show it next to folders.
If anyone at Github is reading this, pretty please :D?