We've got a situation where we're blogging the contents of a book, as we write it for feedback, etc. We'd like to make it so commenters can check a box (or even have it already checked) to subscribe them to a MailChimp list, so that they can be notified when the book is available or other important announcements. We could force people to create an account to comment, and then use this plugin to sync to MailChimp. We'd prefer to just have a checkbox below the comment field. Any chance something like this could/would be added in the future? They're already submitting a name and email, why not have an option to sync to a list?