What if I were to take a Plone install, delete all of the Zope 2 code (leaving mainly Zope 3 stuff), then mangle the code (including CMF) until Plone works again?
I know I’m foolish for saying this, but my intuition tells me I could actually do it, especially if I got a lot of help from others. I think it would take 1 to 3 months of full time effort. I would redesign all sorts of stuff in the process. The resulting code would not be compatible with any existing site; the necessary migration scripts would take many more months, I think. But the code would be enough to create new sites from scratch and put them on the web. The intent would be to make Plone more maintainable.
It would be really crazy… but fun, I think.