If there's another AW game I'd like them to re-release, it'd be Days of Ruin. The story was darker and edgier done right.
The audio, however, must be remastered. The soundtrack was kickass, but the compression was UNACCEPTABLE! I mean seriously, it sounds like it was in freaking 32kbps or something. To be honest, I think they'd be better off using synths instead of trying to cram CD-quality music into a card.