I'm obviously not arguing in favour of replacing git, hg or svn with this. It would be a fun, additional feature to have. You could then watch how the code evol

I'm obviously not arguing in favour of replacing git, hg or svn with this. It would be a fun, additional feature to have. You could then watch how the code evolved over time, easily move step-by-step, hand it over to a less experienced developer to teach him how to refactor code, and so on. I would find it useful.