I agree - the PB line is hurting for better/faster/lower power CPUs, so I'd be very interested in advances there. Not that it's directly related to Intel, but I'd like to see some state-of-the-art-in-2003 displays thrown in as well.
I say this as a happy 12" PB owner. I love my PB, but I want a desktop replacement (e.g., the 17") once it beefs up a bit.