We can easily do that.  It just needs to drop into /etc/yum.repos.d as
fedora.repo (or similar) and we could then have the devel
fedora-release package contain the devel tree urls.

the /etc/yum.repos.d dir already exists and you can put whatever you
want there.

I would almost encourage one pointing to fedora-extras with enabled=0
in the repository stanza.

So people can turn it on (from the cli or in the file) if they choose,
but are not required to do so.

I'll work on compiling the list I got.

However, I'm leery of enabling a config in fedora-release for yum
without doing it for up2date too. :/

fine by me - I'd suggest a common config format but that doesn't work
all that well with these apps. I'm in for a blocker for FC4 being a
yum-backend-based gui interface, but I'm going to need more help, esp
on the interface.

Should be fixed in fedora-release-3-x.

I'm adding mirrors to the mirrorlists as I see them:

http://linux.duke.edu/~skvidal/misc/mirrorlists/

Mirror lists imported.