Partially copied from my post in the other Roger Rabbit thread.
I really hope this happens, and that they use hand-drawn animation for the Toons. It wouldn't be the same if they tried to use CGI.
Just for fun, here's a concept I made up for a Roger Rabbit sequel that would allow them to use both:
"Who Cloned Roger Rabbit"
It’s 2004. Toontown is now divided between hand-drawn Toons and CGI Toons (with stop-motion Toons perhaps caught somewhere in the middle.) The plot would revolve around a conspiracy within Maroon Cartoon Studios to dip hand-drawn Toontown off the face of the Earth and replace the toons with new CGI versions - the title referring to Roger’s “hip, edgy” prototype CGI clone, who could either turn out to be a good guy or an evil digital drone, or possibly a Jekyll/Hyde thing between the two - with a counter-conspiracy by hand-drawn Toon extremists to delete the CGI toons. Freddie Valiant is a senior VP at Maroon who has little interest in Toons beyond their profitability, but he’s reluctantly roped into investigating the goings-on by his aging Private Eye grandfather Eddie .
I agree about the scaryness of Polar Express. There was the creepy "technically sort of realistic but failing to capture the feel of reality" animation, but the main problem was that the vacuum left by the lack of plot was filled with well-intentioned but heavy-handed moralizing. Excuse me, I think I'll go walk on top of a moving train, because so long as I believe in him, Santa Claus will never let me fall off!
I liked Beowulf much better, but yeah, there were moments when I totally bought it, and moments when I was totally aware I was watching motion capture.