I'm going to say something I might regret because I initially bashed the iPad and the Scion (which we now own). However I will say it. I think a camera is rather stupid. If there's one thing I've noticed it gets tiring holding the iPad up after a while. The purpose of it is to carry around and do things on it while on the go. I'm trying to picture taking a picture with this overly large iPhone and it doesn't mesh. In addition you have to be angled just right to use a built in video camera and with the way the cases are being made I don't see that happening.
Somebody mentioned USB and flash. Amazingly I don't even miss those! I'm shocked I don't. Can the iPad REPLACE your computer. No but it is a very portable option as a go-between and a great item to replace individual computers in classrooms...for the most part.