is that I want to get some feedback on whether or not it's worth putting this on CPAN as a module
I assure you there is code of far lower quality on CPAN. Not everything you place there has to be perfect. In fact worrying about it is detrimental to Perl development. Instead, post it and take care of your code - accept patches, actively maintain it (if you can't, pass it off to someone). Code you initially post does not have to be perfect, that's not how open source development works. I assure you the linux kernel wasn't perfect the first day code was made perfect, and it isn't perfect now either.
So yeah, post it, don't worry about the neurotic perfectionists, they just haven't taken their prozak yet.
