Geno, has 3 coaches besides himself, sitting on the bench. BEFORE each game, I would give a specific task to each coach. One coach could watch for defensive mistakes; another coach check to see if the offensive roles are being conducted correctly; and a 3rd coach check if the rebounding on both ends of the court is done correctly. Geno could add to each of the 3 topics, or anything else on his mind.
It is true, that many time outs are for REST, but the in-game players should be seated, and resting, and they can be talked to while doing so.