The next time I need to get a set of requirements, I'm simply going to start with roles with goals.
I made the mistake of asking for a set of scenarios. What I ended up with is a list of user tasks. Tasks aren't the same as goals. Flying a kite is not the same as having a goal to discover electricity. One is what you're doing, the other is what you want to accomplish.
Since I didn't have the benefit of direct customer interaction for this case, I'm using that as a challenge. What is the most precise, reliable way to get the information need? Roles with goals. I realized, iterating on a list of roles with goals, would get me closer, faster. I can always drill into the stories or scenarios from the goals. The reverse doesn't seem to be true.