Counterproductive. From what I've seen of MMA refs for the most part they want to be viewed as alpha males and wouldn't take kindly to being suggested what to do.
Gus, Shad, Shogun
Lawlor, Weidman, Lyoto
NBK, Rukus, Lawler
Edgar, Mendes, McGregor
Chuck, Lytle, Serra, Igor V, Huerta, Carwin