Many camps will put some sessions on a "waitlist", in case some accepted sessions can't be presented by the speaker. The Event Platform should have support for this.
Proposed resolution
Adding support for this should include:
Add the new workflow state
Add a transition from proposed and to accepted or declined, and add permissions
Create an ECA VBO model to bulk waitlist sessions and make available to the moderation view
Create an ECA model to email the author when a session becomes Waitlisted
Create an ECA model to email the author when a Waitlisted session becomes Accepted