There are two solutions to the coordination problem, and both of them make people uncomfortable, because both challenge our resistance.
1. Relentlessly limit the number of people allowed to though(?). That means you need formal procedures for excluding people, even well-meaning people with authority. And you need secrecy. If you have a choice between being surprised (and watching a great product ship on time) or being involved (and participating in the launch of a mediocre project), which do you want? You must pick one or the other.
2. Appoint one person (a linchpin) to run it. Not to co-run it or to lead a task force or to be on the committee. One person, a human being, runs it. Her name on it. Her decisions.