Well to me it seems the 2 biggest changes he made in game was defense and having the Knicks play more half court basketball.
Accountability too which not for nothing the best coaches do that alongside time management. However I like his qoute about being accountable himself, and probably telling JR to cool it because the Knicks play those guys tomorrow and then letting him hang out on the bench was cool.
Also he has performed a miracle because Amare was playing D and fighting (though no winning) for rebounds whenever he was in. O.O