Reopen and maintain a public bug tracker and tie it into regression testing.
The xen.org bugtracker fell out of grace almost a dozen years now.
It would be good to have one and integrate it in the Xen release management.
Otherwise many more people aren't just affected by bugs or other issues, but they also all need to spend time discovering / debugging and researching it.
Using a "lively" bug tracker would also allow to verify if a problem is fixed.
Chris Gerard commented
I couldn't agree more, it should be mandatory!
Florian Heigl commented
Can't seem to edit it anymore, almost a dozen is overstating it, the exact of time of death is not known to me. I know it already felt cold when I opened the last bugs.