Two examples - one can be dealt with reasonably easily (if not making friends) the other less so. And I'm not suggesting vetting the "dive profile", just two or three numbers.
* A Dive Leader takes his (Ocean Diver) Partner regularly to 28-29 metres. It's on a boat booked and paid for by the club - the members on the trip have reimbursed the club. It's been advertised as a Club Trip. It's clearly not training. It happens often but is treated as a joke "Sorry mate, wasn't paying attention", "Sorry, the reef was a bit bare at 18 metres". Who carries the can when things go wrong?; I'm not taking that risk. Serious words that said member is not taking his partner in again anywhere the sea bed is deeper than 20 metres. Am I over reacting?
* A group of six re-breather divers are doing a deepish wreck dive, as a club dive. They give me a planned max depth, run time and the size and mix of their bailout tins. As a FCD / AI I haven't a clue if that's an appropriate bailout - I wish them luck and let them get on with it.