Reason: I'm not aware of a HUD that is currently available for Solus and many people myself included find them to be very useful, especially for video editing.
Is it Open Source: Yes
Latest Version: https://github.com/ubuntu-mate/mate-hud/releases/tag/18.04.8
As this task has been marked Needs Maintainer for a month with nobody having stepped up to become maintainer, in addition to providing an acceptable patch for inclusion, marking as WONTFIX. Feel free to re-open when a patch has been submitted via the proper processes.