OP
ScooterTDI
Registered
As someone who acts in that roll I consider you opinion more substantial than mine. However still I don't quite agree. If you can't run a class without involving additional less-qualified professionals, the class is perhaps too big.
The class was just us two. The DM was only there on the second day of OW dives. The main reason for the DM was to have someone watch one of us while the instructor went up with the other during the CESA drills. As a side benefit during the nav parts, the DM just followed along to make sure we didn't get lost which allowed the instructor to "catch" us on the way back. The only other thing the DM really had to do was follow at the back during the fun dive part at the end.