Brainstorming is notorious for being unstructured and often unactionable. People get in a room with some Post-its and whiteboards and expect the great ideas to happen. The problem is, even if there are great ideas in the room, there is often no clear-cut way to decide on what ideas to take action on.
About a year ago, I and my colleague Michael (founding partner at AJ&Smart) were sitting in a masterclass run by the fantastic Adrian Howard on the subject of feature prioritization in agile development. More specifically, we were asking how we could decide which feature comes next and when it should be released.