Make it interactive.
An AMA section would need to be created. A week before a potential guest, a thread is opened in the section with a notice of who the guest is, what they do, why they are getting an AMA, etc. Then, in the thread, people have 2-3 days in which they may post questions they would like to ask the guest.
After those 2-3 days, the thread is closed, and the best questions from the posts are chosen to ask the guest. A moderator or member tasked with doing so will "interview" the guest via FaceTime or Skype. This interview will be posted in a new thread, in addition to audio format as a podcast, and a PDF as a transcription performed by a willing and paid member to do so.
Responses can be given in the new thread, and potentially after a few days of this, the guest can come back with an account and respond to some of the questions post-interview. Completely interactive and transparent, and would bring some good-quality traffic to Black Hat World.
Very good idea, t0mmy. Anything I can do to be of assistance I will. I may be able to pull Dan Coffey from Instagram's Customer team for one.