I was picturing a live action movie where the characters are human. Actually, I was picturing Arthur in college, D.W. in high school, and Kate in junior high. Perhaps an all-star cast?
Eh, I don't know. There's just something about a live-action/humanized Arthur that makes me a little uncomfortable. But I do agree that a college Arthur/high school DW/jr. high Kate special sounds interesting.
I like the concept of live-action Arthur, its just the execution most likely wouldn't work.