Considering that stadiums sometimes have problems keeping the lights and clocks running, I imagine adding something as complicated as rfid would be near impossible. "Game has been delayed due to blue screen of death."
The simplest thing might be some kind of Infrared sensor, or a camera that is keyed in on the specific color of the ball. The problem being whether or not the system could detect the difference between a shot going through the bottom plane of the hoop, and an airball doing the same. Maybe they could put a sensor at the top of the hoop, and another at the bottom. But the question of technology comes up again. Will it cause more problems then it will fix?
In the end I think the league will decide that 0.2 seconds and the hurt feelings of the spurs fans will be enough of a reason to spend millions on it.
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