We need world class, modern, distributed bug tracking now. If you google around for this technology, a lot of nice ideas, many using git itself as transport, were poking around, and around 2009 they started falling silent. Why? Because GitHub started up and everyone just buzzed over to it like so many moths to a flame, having learned nothing from places like Sourceforge about what happens when 90% of the open source world trusts their issue trackers, which is really a huge part of a project's documentation, to a for-profit, closed source platform that does not provide very good interoperability.
If GitHub is kicking back and sitting on their huge valuations, then it's time to pick up this work again. If issue tracking and code reviews were based on a common, distributed system like git itself, then all these companies could compete evenly for features and UX on top of such a system, without ever having the advantage of "locking in" its users with extremely high migration costs.