you guys make a solid case about Denny, but I still think he added a lot of credibility and consistency to the band. Although we all know Paul would have gone on, I don't think "Wings" would have if denny had left at any time in the 70's. I don't think they would have done a world tour and it would have probably confirmed any assumptions that Paul was an egotistical freak--and that he broke up the beatles (or, to be more accurate, alienate John and George to find other interests aside from the beatles). I think Paul should have given Denny and the other band members more credit when he had the chance, and that was during "Wingspan". I was actually a little dissapointed that it was "all the best" all over again, instead of showcasing some of the music and accomplishments of a "band".