Tumbling Dice - you vastly underestimate Mullen's influence, especially recently. On HTDAAB, he was the one who pulled the plug on "Mercy", which in my view is one of U2's great pieces of music for this millenium. Whether you agree with my assesment of "Mercy" or not, the decision to eliminate the song was driven by Mullen. Bono, if you recall, thought "Mercy" was pure, classic U2 and seemed displeased by that decision. In the musical session leading up to NLOTH, Mullen was the vanguard who soured on Ruben and pushed for reuniting with U2 stalwarts Lanois and Eno. If that doesn't meet the defintion of influential, then it seems we have different interpretations of what that word means...