I see all of your points in regards to keeping the kwoon/workout time completely professional but what about times when you meet, or have contact with a kwoon member off the mat? As a hypothetical, if I meet someone at my kwoon whom I joke and talk with off of the mat (say, while cleaning or before/after class), or we hit it off at a kwoon members only party (we have those), I don't see the harm in it. Sure, during class time the focus should be on the material and not on the person, but outside the kwoon it should be alright for members to date etc so long as it does not affect the kwoon atmosphere. Just my opinion.
-ZC