the next step should be to collect data and opinions about what are the good and what are the bad parts, both in technical and social terms.

Thank you; that is precisely what I had in mind.

having a Perl 6 perlmonks is a very good idea, as long as it doesn't mean Perl 6 questions are banned from current perlmonks before the new one is ready :-)

No, I don't expect that to happen. Rather, I expect this PerlMonks to die a natural death (as it seems to have one foot in the grave already) as Perl 5 usage drops off and Perl 6 users congregate on the new site. :-)