I have often considered our field a bit messy when it comes to actually measuring productivity. Obviously it is not strictly about line of codes, commits etc.
However, any estimation we may have by analyzing the metrics could still yield useful insights which is indeed better than nothing. In that regard, I can see what you guys are trying to achieve and I'm interested seeing it as a mainstream product which would also allow us to see how useful it can get when it was used more commonly. I'll be keeping an eye out for GitLab integration and ask my team to use it.