From Gameplayer... "There it is again, that quietly optimistic sense of expectation. But beyond the esoteric, "Please don't suck" feeling what do we really want from Killzone 2? We had a little think, then a nap and then thought some more. Then we came up with a list. And here it is, the 10 things we want from Killzone 2."
This article examines where Killzone 1 failed, where the current FPS expectations sit and goes on to propose how Killzone could beat it.