Extraneous issues should not be discussed. Accountability and responsibility are key elements in any meeting. Make sure that the meeting stays focused. Set the stage for proactive communication and input. There are no stupid ideas.
Creativity is merely ideas in the making.
Walt Disney said, if you can dream it, you can achieve it. Proactive communication is important. Get commitment and set dates. Determine what is next. Many follow-up steps can be achieved through other mediums rather than meetings.