Hm, I just skimmed trough the pep and looked at your example. Is it right that the primary focus of WSGI is the response, and not the request?
You still use the cgi-module to retrieve the get/post parameters. I don't think that all kinds of servers realy support the cgi-interface, or guarantee it to be correct when not invoking a cgi ( in the dark mysts of my mind ther's some faint doubt about this cgi-thingy working with mod_python )
I understand that the WSGI should be kept as simple as possible. But I do not realy see the point of it when I still have to write server specific code just in order to get hold of the parameters ( which is apart from the reply the most profane task of a dynamic web-page )