I think that the point to be made about the NBA is that you do what your supervisor wants you to do!
Do you think for a minute that if Ed Rush wanted his officials to be using different mechanics, that they wouldn't be?!
The NBA has some great mechanics. Personally, I like the fact that they are not always running around the court like crazy... It looks professional and gets the job done.
When I get hired, I'll let you guys know a little more about the mechanics and stuff