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.