Please comment my DocBook-html DSSSL Customization

A long time ago, I made some customizations to the DSSSL stylesheet for
DocBook.
Since, I did not followed changes made the regular stylesheet and I
would like to merge my DSSSL stylesheet.

My customization is available at:
http://www.casidy.com/downloads/DocBook/dsssl/modular/html/docsite.dsl

If you browse http://www.casidy.com/ you can see the resul of the
customization.

Can you tell me if you find this customization
- useful
- obsolete
- useless

In case people might find it useful, I may propose changes to the
regular customization.

Thanks,

-- 
 Philippe CASIDY