7 layers of nav is okay if it all makes sense, has good IA and doesn't get in the way of what you do most of the time. Gmail is a good example of this. There is navigation all over the place but what is front and center and most important is your mail - and that's a good thing.
I think the issue that Github has right now is that all their navigation, while useful, pushes the thing I care about most of the time (the source code) nearly 1/2 way down the page. Do I really need to see the git clone URL all day every day? How about the pull request button? Probably not.
I think the issue that Github has right now is that all their navigation, while useful, pushes the thing I care about most of the time (the source code) nearly 1/2 way down the page. Do I really need to see the git clone URL all day every day? How about the pull request button? Probably not.