Daniel Solis came up with a neat idea he calls Split Decision: http://danielsolisblog.blogspot.com/2010/10/split-decision.html
It's a dice resolution system very close to that of Apocalypse World, except that instead of rolling just 2d6 and adding them together, you roll 4d6 and choose the two highest. The catch is that you're using 2d6 of one color (say, Blue), and 2d6 of another (say, Red), and the color of the two dice you choose has some sort of effect over the fiction or the mechanics of the game itself.
Has anyone thought of using this in AW? Can you imagine a way to do it that adds more than it takes away? Do you think it would add in too much cognitive decision making about the dice and distract too much from the game as it is meant to be played?
The first thought that came to my mind was actually a sort of Star Wars themed Apocalypse Galaxy, in which someone (such as a really nasty Sith Lord), has caused everything in the galaxy to go kerblooie, and now it's really hard to just scrape by anymore what with the pirates, raiders, and bounty hunters ruling the hyperspace lanes now. The Psychic Maelstrom would be the Force, naturally, and the Blue dice and Red dice would be the Light side and the Dark side, respectively.