I would probably do it as a subsection of https://fedoraproject.org/wiki/AutoQA_Roadmap because we can all subscribe to those pages' changes, as opposed trac wiki pages. Just an idea.
I figured that the trac wiki was a better place for it since it's AutoQA development specific and unlikely to be of much interest to other people. My feeling is that more fedorahosted projects (ie [1], [2]) put development information in their Trac wiki instead of mediawiki but I could be wrong here.
Your point of view is completely valid. We just can't subscribe for changes. But let's keep it there, I don't think it's too much important. (And not everyone is probably such subscriber freak as I am:)).
Also, I wouldn't duplicate the list of tickets under Progress section, because it is bound to be outdated all the time. The always current list is available as: https://fedorahosted.org/autoqa/milestone/0.5.0 (and clicking on Closed and Active tickets links)
Actually, that is a Trac wiki macro that lists the tickets instead of a list of tickets typed out by hand. It's functionally the same as looking at the milestone and updated without any extra work on our part.
Gosh, that's good! /me should have looked at the page source. Nice.