[Zope] Son of ZSyncer

ZSyncer is a cool product but.... It isn't recursive and it's not scriptable. I need a product that synchronizes client from a parent site recursively through the folder structure, but configuable so that certain folders and their descendants are not synced. I also need the difference test to be something a bit more robust than date/time since some clients get hot patched and can possibly get out of sync. (The fix was done to the master but not distributed, but the secondary got hot patched with a hotfix...) Suggestions?