the dies in the Factory classes don't seem feasible. What if a user submits a form and you need to do server-side validation and respond back with the form BUT with each problematic aspect of the form indicated in some way?

Everyone has been smacking you over the head with the tried-and-true bread-and-butter DFV and I don't mean to continue the bashing but I can do the above task with DFV but how can I do it with your Class::CGI?

Also, a good framework like Catalyst or CGI::Prototype does make object creation from CGI data clean and re-usable already.

My suggestion is for you to implement at least 3 of the Catalyst examples using Class::CGI and all of the DFV tutorial using Class::CGI. In doing so, you will have the best practical non-theoretical feedback you can get.