Why not change the name of CPAN to something with the substring 'Perl' contained in it
Because, ultimately, CPAN is not your project, and not a Perlmonks project either.
Perhaps your idea is brilliant. So, why don't you just go out and implement your idea? How do you think CPAN started? Someone posted the idea on Perlmonks, and then it suddenly happened? No! Someone had an idea, and he just went out, did it, and said this is what I did, this is how you use it, feel free to use it or ignore it. And it became a hit.
So, go out and set up a "Perlan" or a "Perl Archives" or whatever. And since all modules on CPAN are freely distributable, you won't have a problem filling your archive.