I don't know the specifics of what the chart would contain, but I'd be concerned unless it aimed to only show activity for branches that are open. Dangling commits should not be considered...rebases leave quite a few of those hanging around.
That might work. I am biased, though. I actually happen to have color-deficient eyes. I would like the option to hide commits for branches that aren't merged or aren't approved. There are a lot of ways something like this could be used. Functional requirements will likely dictate actual implementation once they decide to proceed.
Hi everyone, thanks for the feedback! The search index (#2874) will probably help out with this. If you'd like to share more details about your team's use cases for these kinds of charts, please use the "Send Message" button on my profile page. Thanks!