What about something like apple's Extension Manager, where you could disable/enable 'sets' of products? Though frankly, it's not too tough to just move the subdirectory somewhere and restart... but it would be a way to have a TTW way of configuring your Zope, and having the option of 'loading up' the distribution with optional stuff (which might be disabled by default?)
From: "Adrian Hungate" <adrian@haqa.co.uk>
I think that monkeypatching goes right to the very heart of the language - Python was written not just to allow it, but it's opperation almost encorages it (Sort of). HOWEVER, I am somewhat against a monkeypatch being made part of the core distribution (No disrespect to the authors of such products - me included), these should be optional downloads, up to the point that the code is rolled into the core codebase.