I think some people don't know what 'waggle' is. Arc support for a game like Killzone would see very little 'waggle' and it would actually improve on the accuracy (or lack thereof) that the twin stick approach provides.

KZ3 will be coming out but I don't think it will be out this year. Most likely in Feb. or Mar. next year.

ok here is a thing you may not know on a normal shooter, normally my accuracy is around 70%, but if i use a motion control device like with wii, on house of the dead, my accuracy shoots up to 80%, so that is a big improvement for me, also i am much faster at aiming and firing, as often this is the reason why i got owned at multiplayer fps too much, i spend too long aiming at my target even though i saw them before they saw me lol.

personally i think the arc will do wonders for fps games.