If you have a powerful enough PC (which you would have to have for WO if it was made for it) you can emulate Pure and Pulse smoothly (and in 1080p 60 fps), and Fusion as well, but likely not in it's full functioning state. Then you can use the Motionjoy DS3 Tool to hook up a DualShock 3 to your computer and play them. If you want more info on how to do this (legally), just PM me.
Back on topic, I think if they made a game about the FX500, they need to take some elements of Fusion track style into it. Now don't criticize me just yet, hear me out. I'm not saying all the crazy loops and all the slightly over-the-top track design, keep the normal use of mag strips seen on the FX400 tracks, but add more nature, and more light. Have open sections like Fusion, 2048 and SSGX, and have stunning scenery, even in the bright and Utopian cities.
I know I've preached a dark, gritty, dystopian style in another thread, and I still think that's the way WO should have gone, but it couldn't just turn around that fast from the FX400 to the FX500 without a cataclysmic collapse like the Fall of the F9000, which I'm not cheering for, so in that case I hope they continue the bright, natural style of Pure, with better graphics, of course.