I realized every point you mentioned before/at it's announcement.
However, things we don't know scare me... Well, my only concern is the battery. If it does this much stuff, it will be like the PSP. My PSP doesn't even last two hours on the lowest screen setting.
Also, you forgot to mention the online (Which is understandable because we don't know much about it), and the motion sensing it has (Which, again, we don't know anything about).
Did Nintendo ever say anything about the motion sensing? They said a few things about it before E3, and never mentioned it at E3.