Push and pull to your own server running Gitea/Gogs or Gitlab, and mirror to Github if you feel the urge? Or, if you insist on having your workflow around Github, do it the other way around: have your local server mirror your Github repositories. That way, if Github goes belly-up you can just switch to your local server for the time being.

I always thought that an IM-style tool with online/offline presence information of remote repositories could be a fascinating tool for DVCS source control repositories.

Tried to prototype on XMPP at one point in college but never got very far in the prototype.

(That was back when I was a heavy darcs proponent too and had other crazy things like automated consensus branching as a great distributed way to coordinate efforts on such a distributed project, which would work with the darcs push/pull/merge model but not so well in git's.)

You can set up another git server and webhook pull from the main one whenever someone pushes there, so you have a backup replica. Coders just need to setup two remotes for the repos and use the second one when main one is unavailable.

If your workflow depends on centralization, run your own centralized service. If you can't live without the GUI, Github will even sell you Github Enterprise. Or just run Gitolite or one of the other tools.