While I'm seeing Killzone 2 utilize the Sixaxis in creative ways (especially with sniping. As explosions will shake the Dualshoke 3, and in the process your aim will be off), for the most part I'm seeing the same gimmicky uses that I never use.
Does anyone think that Sony would have been better off spending whatever R&D money they used on the Sixaxis, and the money it costs to implement that feature for other things?