To my recollection, there's never been any mention of ethical content filtering, which also seems a little intrusive for them imho. Plus, I'd think if such a thing were in place, designing programs where you physically assault the ship's 1st officer in 10-Forward would probably fall under that. In fact, it's kind of a red flag that you might mean the real Riker harm, but that never became a problem for Barclay, until after everyone was scrutinizing his programs.
Which is why I postulated the safeties aspect. Surely the crew's physical safety wouldn't be the only concern for those parameters. If you were creating crew death match programs, where Beverly & Deanna gutted one another to death, that's not a healthy practice psychologically.