> I would prefer all the html files to keep the 
> site structure but all other files like images and 
> stylesheets copied into html/includes folder.

The two nearest build structures are:
- html in web, images/other files in web/images/
or
- html in site_name, images/other files in site_name/images/

But you can't really get the exact structure unless you 
develop a specific addin (complex!)