Use of images for Server Roles in Membership Screening

My server uses a set of images for our server roles to keep things visually interesting to the members, showcasing little drawn skits representing each rule.  I would like to use the member screening feature, and though the most attractive feature there is the "Short Answer" option (which is still in development", being able to have my server rules image there as well would be nice, as it'll guarantee that every new member has seen the rules.

Is there a way to do this, or are there plans to allow it?  Especially since the 300 character limit won't allow for explanations on rules?