There would be no U2 without any of them. Without Bono they would have no voice or image, without The Edge they wouldn't have their sound or their heart and their soul, without Larry they wouldn't have their pretty boy and the band would have never been founded, and without Adam they would have no funk and no rockstar.
You said it pal. U2 is an Icon, not a legend. Like MJ in Basketball. However, since this post is about Edge, I must say he's one cool cat. Goes in, does his job and then repeats it. Day in day out. Happy to witness such mastery

UPDATE: These guys did a great job at the Grammys as well just a few days ago. Long Live U2!