+1
Also, how often do contributors look at the source code on github? Contributors will most likely have the repo cloned on their machine. I think if management interface were to exist, it should default to Pull Requests or Issues, or some kind of dashboard that summarizes new activities in both.
I find the source code view is particularly useful as a dashboard because it gives modification times at a glance for each sub-directory, so as a non-maintainer you can tell whether there might be anything of interest to pull down (and possibly reconcile with local changes), without needing to go to that directory on your disk and do the fetch on the command line. So defaulting away from that isn't an obvious solution.