Now I think of it more, I'd like to add a couple more items:
1) Extend the "lend me" function to more than one time.
2) Allow nook members who are on the contact list to communicate with each other via Daily. This function should be included in both WiFi and 3G.
3) Include a limited web browser also on the 3G. B&N can restrict limited access to websites such as wikipedia (same as kindle), regular B&N store and others as they will choose. I have the 3G nook but I really think the limited function of just shopping and downloading of Barnes and Noble E books doesn't justify the additional cost as compared to the WiFi. B&N can make the 3G version more competitive by adding more functions or a very basic web browser.