One of the most interesting comments in response to Ross et al. (2009) was from David Fahey of NOAA's Chemical Science Division. David in a key figure involved with the many and varied scientific aspects of ozone layer protection. See here for a nice review by David.
Here his comment: "There's a number of exemptions to the protocol," he said. "Each one by itself is small, but if you go too far, it could be death by a thousand cuts."
Often it is difficult to make reccomendations without falling to the "Cassandra Complex" but the space industry should take an interest in not being one of the thousand cuts.