I want to see Condit/MadDonald as well. I really believe Condit could easily drop down to 155 and win the title. Part of his weakness (along with wrestling, but ties is) is that he's not as strong as most of his opponents. It's a testament to his skills that he beats them all up. I bet GSP outweighed him by 15 pounds or more on fight night. Kampman was clearly the bigger/stronger guy.
Imagine the fights at 155 with Condit. Pettis, Henderson, etc.