[ShamelessC]

Yeah I'm fine with that proposal as well. I think that existing wiki solutions could do what you suggest. I'm not sure if any wiki systems use git as a sort of backend and I have a feeling that a database is better suited to the task. I think you might be overestimating the need to revert to older versions to more than the level of specificity that something like Time Machine or File History provides. I also think that merges and diffing aren't necessary or useful compared to the collaborative simultaneous live editing features that Docs has.

I understand and completely agree with the core premise you're getting at here though. You want mainstream collaborative learning using proven open source tools and formats either directly or as a backend of sorts.

I thought the idea of students using git or markdown directly was silly but there is merit to using those as the backing structure for a more user friendly (and hopefully also open source!) frontend.