Smeltz put it well...jumping is the very foundation of having any fun in an FPS
Haze looks great, I jus' don't think the Gameplay will live up to the "Halo-killer" expectations it previously had. On top of that, it shouldn't disappoint as it's been delayed for some good time now. I think save your money and wait for better games, most will be off playing GTAIV any how...not to mention Killzone 2 will be coming out, and CoD4 will keep things fresh with the new maps (hopefully).