Re: What OTHER elements from The Dark Knight Returns could we see?
What Batman fanboys seem to forget (and I say this as a Batman fan, too) is that this is supposed to be a movie featuring both him and Superman. The smartest thing to do would be to use World's Finest and Superman/Batman books at varying points in their history for the source material to get ideas for character interaction as well as plot points.
The worst thing to do would be to use an Elseworld's Batman story like DKR that's so heavily skewed in favor of said character. I especially do not need to see the author's creepy obsession with turning nearly every female character into a "prostitute" and/or labeling them as such incorporated into this movie. Nor do I want Superman's portrayal tainted by Miller's unhealthy hate-on for the character. I am beyond not here for a deluded Bruce Wayne raving at his minion(s) about the supposedly big, dumb Boy Scout who keeps getting in his way, and how he's the only one who understands what's right for the world. Ugh. No, thank you.