Dear friends, I'm glad to read such valued opinions here. Now I've got the perception that web2py CMS as thing-in-itself doesn't make any practical sense. Web2py is much more powerful and flexible tool than PHP-CMS's. I see web2py CMS as an "ecosystem" of loosely coupled components sharing some part of databases.
Therefore the question is in 1) how to improve plugins system? 2) how to organize the self-consistent repository of CMS-related plugins and applications? 3) how to come to a common concept of CMS-like system using components above? 4) how to force this process? --