Ahh but it does

In your script you just need to call:

my $cgi_app = Foo->new();
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Sorry that wasn't clearer. new() in package Foo makes the call my $self = $class->SUPER::new(). Because of the use base statement SUPER now refers to C::A. $cgi_app is an object from which you can access your own methods or the C::A methods. If you need to pass opts to C::A you can modify new() in Foo. I'd modify it so you can pass the opts to the Foo package and it passes them on.

Hope that makes it a bit clearer