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First of all aayers: thank you for contributing to CPAN, and please don't let anybody discourage you.
As the second point I'd like to thank you again for reacting on feedback, even if some of that wasn't formulated very friendly at all. That's not something you can take for granted.
I think you did well in responding on the review page.
On the ratings page of one of my modules I found that some ratings disappeared after a while (and after releasing a few new versions), so I don't think it's a doom hanging over your project for long.
Should I try to publicize my project a bit and try to get more reviews?
Yes. I recommend starting a small series of blog posts. You can join the Perl Iron Man, the RSS aggregator seems to have lots of readers in the Perl community (at least I got much more feedback on my posts after I joined it), and it's also worthy to get your blog listed on http://perlsphere.net/.
Maybe you'll even find some new contributors to your project that way.
Perl 6 projects - links to (nearly) everything that is Perl 6.