It would be nice to know what the sales numbers are on the lineup and in particular the iMac.
Apple needs a strong home-based computer to offer joe consumer. For joe consumer, the powermac is too big and too expensive, the power/i books are perceived as 'road machines', and the eMac is an anachronism that looks like it belongs in the '60s. That leaves the iMac which, although dashing w/a great personality, looks underpowered and expensive compared to a Dell. (Please, no price comparative ranting here--you can get a Dell/w monitor starting $399).
For the iMac to be a contender, therefore, it needs <at least> G5 bragging rights and a larger <higher quality> monitor. (As nice as the iMac's screen adjustability is, if it had better specs including viewing angle, you wouldn't need to adjust it that much).
Now, if Apple had a 20" G5 iMac available a few weeks ago, I would have snapped that up instead of the PB I'm using now.