Why are we building this?
What do you want to achieve with building this? You can even talk about how this will effect Metrics or KPIs
What is out of scope and will be handled outside of the minimal delivery?
What assumptions are you making about your end-user, or the state of the system before looking at these use cases and requirements?
Design considerations, diagrams and attachments
As a persona/role, I want to do something, so I can receive a benefit
spend some time defining the requirements of the user story, sometimes you need to have color around the user story to set some context
what is the user acceptance testing for the feature? how would you or an outsider validate that the user story is complete?
spend some time talking about where this functionality needs to be documented, we had a very documentation driven approach at stormpath since we wanted to have a culture that documentation was the product