5. Win The United States Championship
Mid card championships do not mean what they used do, but that doesn't change the fact that the United States Championship is the one active title in WWE that Punk has never won. Ok, so the tag team gold wasn't unified when Punk won the World Tag Team Championship with Kofi Kingston in 2008, but it still counts. Winning the U.S. title would give Punk a rare clean sweep of all WWE gold. Before Punk wins that belt, however, it would help if WWE built it up a bit. The company could do that right now with current champion Dean Ambrose. WWE should not rush into a Punk/Ambrose feud, but somewhere down the line, maybe even years from now, a storyline could feature Punk taking out whoever the United States Champion is at the time. It would be the final notch in Punk's universal championship belt.