Ok. My last comment on productizer. At the moment I see no problems in implementing the following scenario:

1. SomeClass.py ( contains the actual functionality )

2. ProductDescriptor.XML ( contains dependencies, list of product's configurable properties and (maybe) methods )

Productizer generates the SomeClass_Product proxy object, with creation screen, one ( and only one ) configuration screen and ( optional ) index_html ( including all the dtmls needed. Everything related to Zope integration is encapsulated in this proxy class. This is not current Product ( less flexible ) but this is also not a component as well has GUI ). This is Zope Bean. Such beans should be extremely easy to create, comparing to current Product magic. Now I have to understand how persistency and other things work, but I think that this design can work. I may implement it occasionaly and then we'l see. Comments welcome. Rgds.Paul.