Wikimedia has been having weekly (or fortnightly) status meetings about most of the items you listed on MediaWiki.org, but the notes are being held on Wikimedia's installation of EtherPad. Either document this EtherPad installation (I'm not even sure if the URL is supposed to be public, so I'll omit it here) or stop using it and post all of the notes directly on MediaWiki.org. These notes in EtherPad are (by far) the most up-to-date and helpful pages for tracking the status of projects that I've seen, but I doubt more than a dozen people outside of Wikimedia Foundation staff have any idea they exist. Though, perhaps a bit ironically, I haven't seen (m)any ops-related notes on EtherPad, as far as I remember, so that still might be an area in which only one or two people can give an accurate update.
We use etherpad for real-time note taking, as it is better suited to that than MediaWiki is. For most of the projects that I am a part of, after the meeting we move the notes from etherpad to a wiki, usually mediawiki.org. I don't believe any of us think etherpad is a good way to keep documents for any period of time, since it is impossible to find anything in it. I'm betting that almost everything not moved from etherpad is never looked at again.
I think the correct solution here is to continue to move the documents from etherpad to mediawiki.org (or some other appropriate wiki), and try to be more vigilant about doing so.
Respectfully,
Ryan Lane