See also:

• Re: CGI Parameters (CGI::Lite, CGI::Minimal, and CGI::Simple have all had releases in the past 1.5 years)
• Update: I just became aware of the new CGI::Tiny, written by DBOOK and containing a set of interesting functionality.
• UP-TO-DATE Comparison of CGI Alternatives (personally I'm a fan of Mojolicious, and despite what you wrote here, using it to replace a CGI script isn't that much more work, as I showed here)
• Also worth mentioning are PSGI and Plack, though those are relatively low-level.