That's obviously all context dependent and in any ideation/brainstorming process it's valuable to have a free flow of ideas but there's a necessary filtering pr

That's obviously all context dependent and in any ideation/brainstorming process it's valuable to have a free flow of ideas but there's a necessary filtering process afterwards. David Allen writes in Detail about this in Getting Things Done, specifically in the chapters of the natural planning process. Now with regards to the backlog, if a team can develop common criteria for high value/high priority tasks and learn to reject low value/low priority tasks than they can more effectively manage their backlog and time.