After a fair bit of interested responses to my blog post, and inspired by the group Martin Krafft pulled together for vcs-pkg, I've given this project a name and set up this website and the mail list.
Please join the list and use the site. If someone wants to be bold, a list of existing distributed BTS software needs to be added to this wiki.
I'll be posting my designs to the mailing list, and perhaps to the site as they mature. --Joey