Well, I completely echo all of your comments. I bought one for my mother yesterday (they had them at the local Best Buy - Milo.Com rocks for searching stock). The screen being the same also felt like more of a letdown than it should have - it's just it feels like it should be higher res just because... The camera really is awful. As a contented gen1 iPad owner, about all that I've felt playing with the new one is that I have no reason at all to upgrade.
The tricky thing is actually
going to a Retina resolution. They are going to have to do some pretty crazy things to pull that off - including resolution independence, I'd imagine. 2048 x 1536 would be insane to read text on, so you'd really have to boost that up, as well as make giant menus - or do resolution independence and solve the whole problem. But I don't know if they are going to have the horsepower to push both the resolution graphically
and the resolution independence. But if they can, that'd be great, especially if they could add a pressure-sensitive stylus to the mix.
Yup, the camera is awful. I wanted to love the rear camera, but it's grainy even in daylight - pitiful. Very cool that it has cameras, but I'm betting the iPad 3 will have better cams, especially now that the new Macbook Pros have HD iSight webcams built-in. That's how the marketing department works for upgrades