People will make broken or exploitive missions regardless of how many Foundry features are kept out of their hands, if they have the inclination to do so. Why keep various tools out of the hands of the many people who will use them well because only a few will misuse them? Wouldn't it be much better to add said Foundry features in and then take action against the ne'er do wells? In fact, it may not even be necessary for there to be GM intervention, what with how permanent bad ratings are. I know I would first check with the author of a broken mission to see if it was a mistake, and then I would only report/downvote it if they refused to fix the problem.
I say let authors do things like beaming out contacts, because the playerbase will weed out the bad eggs while the Foundry stands to prosper from the enhanced tools that would be available.