For a poll it makes more sense to ask something like, Which of these is next on your list of things to try or improve on in Perl? That works better for a single option poll. It works if you want to include (as above) a mix of Perl-specific features and non-Perl technologies. And it lessons the possibility that people will accuse you of leaving out what they actually want to try next.

Now let me disprove the last benefit. I know that you say a better list can be made, but personally I am somewhat miffed to not see closures on your list. :-P

Examples of worthy additions could include DBI, Inline::*, mod_perl, attributes, and test-driven development.