PS3's new controller is going to be awesome. I am ready to buy one right now(Sony: hint, hint...)
This is going to make FPS games fresh and fun again. It will be like I never lost my strafe left finger.
I used to play FPS games on PC for years then lost the left strafe finger in a freak parkour accident.
I switched to playing on consoles since you don't need your ring finger for that. I could never completely adjust to having my thumbs make the kind of precise movements I could get my entire arm to do
(when using a mouse and a huge mouse pad).
I think that being able to move the camera around in FPS games with natural 1:1 motion control will make it possible to be even more precise than when using a mouse due to less or maybe no motion translation scaling (scaling the motion from in game size to thumb size)
And that sucks about your finger :S
I think that is actually easily remedied and probably the primary function of the Move button. You can press it down to activate camera movement and let up to make it stay in one place. I figured that out by switching to this thing called the "gyromouse" which you can look up on line. I used it on FPS games on the PC for a little while and that is how it worked. The reason I stopped using it is because there wasn't enough button cumstomisability(i may have made that word up just now.