I find the actor who plays Michael seems to be fine -- he's good enough, the right age, and (for me) works well with the other ensemble around him (Carly and Sonny and Jason). I've missed most of his actual love affairs and child production, but it's amazing to me that he can't create chemistry with a single actress. Not a single one. Willow was Trying So Hard in one episode, I thought her lower lip was going to fall off from "sexy pouting". But, fizzle.
That's too bad because that character needs to be primed to take over when Sonny is back-burnered 100 years from now. (Think Monica, Allan, Rick, the crazy blonde from that era, and all those other hotties from yesteryears. It's simply a fact that time will march on Benard and Sonny will be passe eventually). But, to do that, the actor playing Michael has to be able to create a family dynasty -- and to do that, he needs charisma. He seems to have it competently enough with everyone but Every. Single. Woman. They. Have. Paired. Him. With.