I brought it up again later in 2010 and 2011 on the members@ list too. Lots of discussion with the general consensus that it wouldn't happen because it isn't an 'open' platform.
I even wrote a blog post about it in 2011, which was also discussed on members@ and in the blog comments...
Nice effort. Some people are slower to adapt than others... as you say in your blog post, GitHub (or something like it) was always going to be much more attractive for people to contribute than the "old ways" of mailing lists... but there's always the risk you'll invest on a platform that will be dead in 2 years. So being conservative is necessary for larger organizations.
https://imgur.com/a/JPQtCQ4
I brought it up again later in 2010 and 2011 on the members@ list too. Lots of discussion with the general consensus that it wouldn't happen because it isn't an 'open' platform.
I even wrote a blog post about it in 2011, which was also discussed on members@ and in the blog comments...
http://lookfirst.com/2011/11/contributing-to-open-source.htm...
Even though it took 10 years, I'm glad to see it finally happen.