Users could create polls (and not only project admins)
Currently a poll can be associated to any topic. But this is only proposed in admin actions.
Maybe, as in other forum software, one could allow users to associate themselves polls to theirs topic too? (Sometimes the feedback they propose is more than a positive/negative vote and would benefit of several possible answers from the other users).
This could be done by not hiding "Poll Settings" in the "More" menu of the topic even when the author is not admin.