Mike Antoni has to go. He is stubborn and unwilling to compromise.
In all his years of coaching, I have never seen him incorporate defense into his philosophy.
Getting a defensive minded assistant is not going to do anything.
Do you think Antoni listens to what Herb Williams, Phil Webber, or Dan Antoni have to say? Nope. And he's been with those guys for three years. So it's even less likely he would listen to an Assistant he's never worked with.