The system may have been 'in place' for years, but it certainly hasn't been 'happening' to the extent that it should. While I can understand why they wouldn't want to use it for judgement calls like personal fouls, it should be used each and every time there is a question about someone who makes a catch or interception before the ball hits the ground, or other calls like whether two feet were in bounds with full possession of the ball, or if someone steps out of bounds while running down the sidelines.