What you says is true, it can be very difficult to submit ad-hoc patches to large projects. In my experience, however, this has been due to brittle, undocumente

What you says is true, it can be very difficult to submit ad-hoc patches to large projects. In my experience, however, this has been due to brittle, undocumented automated checks and newbie-hostile maintainers who have built a complex contribution process. I'm not convinced that a different version control system would change this. There are also many projects on GitHub that are very pleasant to work with.