I sure would want them to do numbers from Too fast for love and Shout at the devil. Tommy Lee is still a genuine rocker and the girls love his attitude and masculine qualities. Girls + Booze + Music that kicks ass = Motley Crue. Tommy's middle name has got to be "Dangerous".
Mustang Harry is for sure better than many warm-up acts I have seen. But since it is only 5 minutes walking from Mustang Harry to the MSG venue you can have both no problem.