Hmm, that's a really interesting idea. It'd sorta be like your Mac's desktop. You have your dock and then an empty home screen if you're a minimalist, or a couple of files or folders you frequently access. On your iPad, that'd probably be website shortcuts and the built-in apps like Mail, Weather, iBooks, etc. I think 6 covers most of my frequently accessed apps. Here's my list:
Mail
Safari
Meebo
Photos
Video
And for the 6th app, whatever comes out for the iPad that I really like, heh
Since I already have an iPod Touch, and don't really like the form factor of the iPad for music listening, I don't think I'll be using the iPod app much. I'm curious to hear how you'll listen to your iPad. Headphones from your iPad's bag?
iPhone OS 4.0 sounds really great as well. If it is a huge improvement to the (already quite usable) iPhone OS on the iPad, it'll be even more of a reason for me to buy it; especially if features like Expose are implemented.