I love that Lennon gave the bass-job to the Keith and did the rhythm himself...talk about ego...[/quote]
Shame so many great pics upthread are no longer hosted. Many great contributions remain though. I'm not even halfway through so it feels odd to respond to a two year old post.
At any rate, Lennon was always his own worst enemy. Including Yoko as vocalist in the Dirty Mac is a good example. I view Keef on bass as a glass half-full scenario. It's a glorious thing to see and hear so while it could've been a Lennon ego exercise the end results show it to be an inspired choice. That muscular bassline on 'Yer Blues' cuts right through the song making it impossible to ignore. Wyman would be the opposite...in Cream or in the Dirty Mac he would get swallowed up and easily ignored in spite of being a fine bass player.