That sounds great! I have partly solved this issue in my autorebase tool (https://github.com/Timmmm/autorebase https://github.com/Timmmm/autorebase) - it basica

That sounds great! I have partly solved this issue in my autorebase tool (https://github.com/Timmmm/autorebase https://github.com/Timmmm/autorebase) - it basically rebases every branch, and fixes the commit time so that stacked branches get preserved even after a rebase just because the hashes all match properly. That obviously doesn't work if you modify or drop any of the commits, so this option is very welcome!