Eh, they would most likely have to wait for a dead ball scenario, couldn't just barge onto the floor screaming for a review, something like that. And there would have to be a time limit for it, like the next dead ball or within 1 minute of game time or something, idk. I still think it could be done but it would have to really require some forethought how to make it possible without disrupting the flow of the game, and they would have to identify what the outcome would, would it be loss of points, additional free throws, possession, all of the above? I think to stop frivolous use of it there would have to be a stiff penalty if they are wrong, like additional free throws for the opposing team, or maybe even double technical on the coach and he is ejected with the resulting tech free throws, something like that probably.