I pointed out some consideration on the CGI::Application model in another thread (Scaling single-script CGI applications).

I don't know boo_radley's projects, but I'm considering to develop a way to automatize writing CGI application. Something that you can feed with a graph-ical description of the processes of the application (i.e.: from this screen to this one, passing these variables... and so on), and that produces Perl code to fill where it's necessary. Just a thought, at the moment.