I've read some comments from people in forums saying that the PlayStation 3 controller is outdated and that it needs a redesign, and I've been thinking about that lately. The truth is the DualShock is a very functional controller; it's really simple for casual gaming, yet complex for hardcore. It must be because of such versatility that the DualShock has survived for three generations.
I wanted to make a concept design of a new DualShock, but I love the DualShock as it is now, mostly because of the button scheme and arrangement, so I decided to keep those intact; but then was there any room for improve?…then I thought cosmetics.

My poor old SixAxis has some hard to reach places (mostly near the borders) where dust likes to gather, and sometimes it's hard to clean it off with my bare hands. So in my concept controller I eliminated those borders that separate the face buttons and analog sticks from the start, select and shoulder buttons leaving a smooth surface in the front of the controller and giving it an overall cleaner, simple, less bulky look.
Then I thought of how would be a more radical design; There is a growing number of games (such as FPS's) where the analog sticks are the most used components in the controller, followed by the shoulder buttons and then the d-pad and face buttons. There have been some controllers (gamecube, xbox) that inverted the position of the d-pad and the left analog stick so that the last one would be more accessible, but they left the right analog stick in the lower right of the controller, giving an awkward sensation (at least for me) when using both analog sticks in a different position at the same time. So for my second concept controller, I switched both analog sticks for the d-pad and face buttons leaving both the buttons and analog sticks in an accessible position while keeping the symmetry of the controller.
If I had to decide which I like the most of all three, I think I'd choose the borderless DualShock. Which do you like better?

Sorry, there was a problem with the images, I'll repost soon.

I like your idea about inverting the L-TS/DPad & the R-TS/Face buttons. I think it would make the analog sticks much more accessible.

I believe triggers should be redesigned. Like you said in an era of FPS the dualshock needs a revamp. All shooters are messed up because of this. Their controller layout is totally different, The trigger addons won't help, because the button layout isn't always configurable. Once you get used to a controller it doesn't really matter. R2/L2 are useless.

Right, there's still so much room for improvements.

I believe Sony was scared after the banana controller and took a safe bet which was the dualshock.

Haha, that was damn ugly.

-Rear Touch Pad: if the rear touch pad takes off for the Vita expect it on the PS4. It will give the controls of a touch screen while maintaining all of the physical buttons on the front of the controller.

-Larger: slightly larger overall controller with a more ergonomic/ curved shape to the handles.. nothing as extreme as the banana controller but still something nice for their target gamer.

-Triggers: expanded and evolved triggers

some other things which would be cool, indicator light for any mail received, led backlit buttons, (not overly bright), better analogues with full smooth 360 degree motion, better grade plastic.

Cool ideas!! The rear touch pad seems like a no brainer.