[Mark Hammond] ...

* All Zope versions are clearly "broken" (as above) in fundamental (but generally the same) ways on Windows, but the status of my patches as "features" vs "bugfixes" is unclear - especially given my lack of understanding of the culture or the Zope world beyond Plone.

They're clearly bugfixes to me; that shouldn't be a hangup here. What's missing is a Zope committer who runs on Windows volunteering time to commit the patches in 2.7-land, and to port them to 2.8- and 3.0-land (those require more than just mechanical merge, because things like moving to Python's standard logging module require rewriting code). Alas, Zope in Windowsland attracts about as much volunteer work apart from Mark Hammond as, say, Python 1.5.2 in Windowsland did. Mark understands what that means. Everyone else can read it as "except for building the installer, hard to distinguish from none" <0.7 wink>.