Hey, I guess you've given away your vote in the poll ...
Right, all that stuff is in O[pen]ACS 4. Not all packages use the tag-closing code but I've dropped it in as I've noticed. It's one of the many little things that should be attacked systematically in our next development round.
As far as how to spend time ... what will it take to get the ball rolling on our site migration? I'm not asking Lars but everyone. We've got the documentation project rolling again so it is possible to imagine a release in the near term, are there people available to work on the O[pen]ACS 4-based site afterwards?
