Actually, speaking as a moderator for the moment, we don't encourage asking readers to suggest ideas in the review boards. That sort of thing is best taken to the forum, because there is a fine line between asking readers for ideas and posting a poll in the story, which is not allowed per our Terms of Service and Content Guidelines.
As a writer, I have been chastised for not including my review reply thread in each chapter, so I heartily second Aysha's recommendation there.