That can be interesting. I don't like Miz a lot but since he is a face, i really hated him. He was really boring. All those Miz TV's were making me sick. He is just not a good face, or maybe, WWE couldn't made him a good face, who knows that. The point is, Miz was going absolutely nowhere as a face. Being face is a lose for both him and WWE as he is not interesting.
For Dolph, I am not a big fan of him but he is a great talent. He is really athletic and entertaining. Last year he dropped the ball because of himself. As far as I know he talked about WWE's management and than there was a heat on him. He is a good face but he is not going anywhere right now, just like Miz.
Now using both of them as aggressive team can be good. Miz is really good on mic as heel and Dolph is great in the ring. They can talk about how they are hold back for months. As some of WWE's teams are breaking up (PTP and soon The Shield) they can be a good choice for WWE Tag Team Division. With that, they can rise once again.