Considering the increasing importance of motion controls, when ps4 will come out it's gamepad will be more similar to the wiimote/arc contollers.
Still with or without motion controls the ps gamepad needs to be changed...at the moment it's less confortable compared to X360 and GC pad, for example X360 gamepad has better triggers and the analog stick should be in the center of the left hand where the actual d-pad of DS3 is. There's no semse having the d-pad in the center position when 95% of modern games uses the analog stick for movements. Fighting games are the only ones that can be played better with the DS3.

Very true.

The Dualshock 3 Controller is heavier then the Dualshock 2 controller.

Dualshock 2 without cable 150gramm with cable 205 gramm 

Dualshock 3 193 gramm

Six Axis Controller 138 gramm

Since the cable of the DS2 doesnt add weight to the controller the Dualshock 3 is 43 gramms heavier thats almost 2 ounces.

If you dont know the metric system:

1 Ounce = 28,3495231 Gramm

You should be pretty satisfied with the DS3 because its noticeable heavier then the DS2 are you sure you are playing with the DS3 and not with the Six Axis Controller ?

I like the weight of the DS3 very much its perfect it feels better in the Hand than the DS2.

I dont have a problem with the Trigger infact I like them and if I am playing with the DS2 I certainly miss something there. Also dont you think that the analog sticks are way better then before ?

Edit:

@milkyjoe

Yes the GC Controller was imho the best classical controller from Nintendo but for FPS you need two analog sticks and the yellow one is not that good shaped so the GC Controller would definetly need an improvment here.

Sony could switch the positions of the DPad and the left Stick on the DS. I dont care about that but it seems that some people have problems with the positioning of the sticks. And also the Dpad could be a little polished on the edges this would be an improvment to me because Fighting games are very hard to play. For Fighting games the Sega Saturn Controller was the best Controller ever.

I would love to see a newly designed controller. It's one of the main reasons i prefer to buy multiplatform titles on my X360, especially FPS, and racing titles. I hate the way it makes my thumbs feel cramped after an hour or so, and the trigger are flat. The natural positioning of the thumb is up/vertical, so my gripe is mainly with the left analog stick.

I like the PS3 controller.  Maybe put 2 buttons at the back of the controller might come in handy.

the only people who want the ps3 controller changed is owners of other consoles (xbox 360/wii) or platform (pc). the playstation controller design is the soul of the playstation brand. me my brother and others grew up with the playstation we mastered and memorized the controller layout and know how to use it wisely in any game genre situation.  the playstation controller is also very hand friendly i dont understand how it wouldnt be for any and size (from experience). i was 6 when i got a playstation (obviously my hands were small) and didnt  have a problem with it. my brother mastered tekken 1 and he was 9 at the time (also let me point out he's a beast in the street fighter and tekken series) and now we're are both in our 20's and we still dont have a problem with it. im also a frequent shooter fan and prefer to play shooters on the ps3 and my god i can own anyone using the ps3 controllers (i love owning cheating xbox 360 users who made the transition to the ps3 with the dualshock). the controller is fine and it's not going to change

That's kind of oversimplification - I've owned every Sony system except for the PSP.

The controller is not the soul of the brand - the soul of the brand has more to do with the image and the developer environment that ws embodied by the first two Playstations, though that's changed to som degree with the PS3.

The DS2 and DS3 are not optimal in that the control sticks, while placed symmetrically, are not placed optimally for use - the D-pad is where the left thumbstick should be, which is to say where the thumb naturally rests when gripping the controller. Switching those two inputs alone would improve the feel of the controller immensely - and, yes, make it like the 360 or the Gamecube pads, but that's not the point so much as ergonomics is. Having the D-pad in the primary position was fine in the 90's when most Playstation games didn't use analogue controls, but nowadays it's archaic for the sake of being archaic - or, worse, archaic for the sake of pleasing fans who refuse to accept change in the controller.

The grips could probably stand to be improved, too, tough that might require a shifting of the entire face of the controller. I'd have to thin about that a while.

the controller is the soul. the software change and the hardware change over the generations but not the controller design. if the ps1 controller was a piece of sh** during the ps1 life-time the console would of been dismissed by a lot of people or sony would of changed it through the ps2/ps3 cycle. obviosuly those who are complaining are a low percent of the userbase as well as other console owners sony wont cater to because the playstation is not the 360, wii, or the pc. let me also bring up that i owned other consoles and never had a problem going between them.

i and others play shooters using the ps3 controller and we dont suck (and we are life-long playstation supporters) the control is design perfectly for shooters so who would sony listen to? the 90% of people who love it or the low 10% who dont? i have no problem going between the d-pad (for skills or other uses) and the left analog stick (for movement) maybe it's just you. frankly it takes more skill on the ps3 than 360 considering 70% cheat on the 360.

my brother and others (me sometimes) play fighting games on the ps3 and dont suck and love the controller (some are even saying tekken wont work on the  360 because of the controller change)

me, my brothers, and others play rpgs using the ps3 cotroller and we have no problem with it.

i love playing racing games using the ps3 controller (i think the playstation controller is the best for racing)

so please even though i understand your frustration there's nothing wrong with the controller and dont try to change it to someone elses controller design because the playstation isnt other consoles.

P.S by the description you gave by where the buttons should be place you described the Ms xbox 360 controller... THIS IS NOT THE 360 IT'S THE PLAYSTATION

Many Playstation fans are stuck in the dark ages, the current PS3 controller is terrible, but they don't want change.

no the button layout, design, and sixaxis seems to work fine for millions of users (90% in another article and 66% here) maybe it's jsut you