I just had a thought. Have you done much Fx extension development? If so, I was wondering if you would like to take over development/support of TEBE
(the Thunderbird version of FEBE).
Some time ago, Gary
(spaceShot9) re-wrote TEBE to get it up to the then AMO standards. It never got out of beta and was not submitted to AMO. A lot has changed since then and TEBE really needs to be re-written again to wrap all functions into a single object and remove deprecated xpcomm references. It does, however, work now with the current Thunderbird 24.5.0 release.
I haven't heard from Gary in well over a year and he hasn't returned my emails or even logged into this forum since Jan '13. I have to assume he has been too busy or has gone on to different projects.
I really do not have the time to invest in re-writing the extension myself but, as you suggested, it may be a good candidate to post on GitHub.
Let me know your thoughts.