It could use some changes to d-pad area since at the moment 7913 directions are uncomfortable to press. Also they need to decide on triggers either they make huge racer/fps friendly triggers like x360 pad has or they make them smaller and better for action/fightning games like DS2 had. Oh and triggers should be made more resilent at the moment wipeout HD is killing triggers ultra fast on current controllers.
PROUD MEMBER OF THE PSP RPG FAN CLUB