I was just banded a couple of days ago, and I was one of those who was not much over 200. Of course, define "not much". Our ideas may be completely different.
I feel that if your bmi is in a dangerous zone, and you have done what everyone else has done then yes, one should consider and qualify for wls.
Why wait until they are any heavier???...and YES, if they don't do something about it now, chances are very great that they will only get heavier, and have more health risks.
Should one wait until they are 20 or 30 pounds overweight to go on a diet, or should they work on it as soon as they become aware of the extra weight gain? It's the same with wls. One shouldn't have to wait until they are at a larger weight than they are ready to combat.
I have had people tell me that I'm not big enough to do wls, but they don't know me and the battle I have fought all my life.