Wireless
Maybe it's just me, but why can't they start off by dumping the phone-network-based data connectivity altogether? Add in 802.11g/n/whatever so you can easily download books when you're at home or work. You could drop the price to something reasonable, and you don't have to make a deal with the devil (cell phone company, same difference) in EVERY SINGLE LOCATION you want to sell your product.
I'm in Canada, and I'd love to have a nice reader that I could carry around. I'm perfectly happy to do all my downloading where I have wireless access!
Or is this available and I'm just not aware of it?