In a vaccuum, sure. But Polak is unfortunately only marginally better than McQuaid and Miller.
I know this team would never have the cahonas to do it IN season, but you have to seriously gauge the value of Seidenberg right now. I'd seriously consider a hockey trade surrounding him. Get somebody in here that needs a change of scenery. Call me insane, but I've been pondering it for awhile. We always here the name Edler. We heard it last year. What about something surrounding Seidenberg and Bartkowski for Edler? I think the value is fair. You are acquiring Edler at the age (or right around it) that you acquired Seidenberg at. Nobody was exactly pegging Seids then as a shutdown guy on a cup contender then, either. Just a thought.
From there though, you can't be done. One move has to be to get a hockey trade like that. The second would be to acquire another top 4 guy. Somebody that fills the stay at home reliable, but offensively capable. I keep coming back to a guy like Sekera. I don't like the cost. But a deal that IMO is a worthy move for a team like Carolina is Spooner and a 2015 second. They get a great pick in a great draft, and they get a center who is ready for the NHL NOW. He can help a brutal powerplay, he can get fair third line minutes, and can cause problems for team's bottom pairings with his speed. He can be a cost effective piece for them in the next few years that they can utilize at a position they are kind of weak at. Outside of Staal and Lindholm, they don't have much. Nash and Rask are both decent players, but both have been getting overwhelmed this year. I still think Nash is more of a winger than a center.
I don't know though...I'm just spitballing.