There is nothing better right now than the MS Word workflow with all the accumulated templates, macros, etc. We can both imagine better things, and it is indeed an area that could use a lot of innovation, but github, with zero support for word processing formats or even binary files in general, is a non-starter here. Want to disrupt the space? Make Github for ODF documents in a way that let's you cleanly e-mail around diffs and apply them, and let's you easily merge changes from multiple people to documents that may have drifted from the branch point. Make it robust, so people don't fear using the tool for what it might do to their documents. That's a billion dollar Office monopoly-challenging idea right there with applications far beyond the legal space. It's also technically challenging as hell. This is not a space where a minimally viable product is going to play. It's competing with MS on its own turf.
