its almost perfect already.
but things i would change would be:
get rid of the battery pack, its annoying and kinda hurts my fingers
improve the bumpers, make them more like the ps3's analog R1/L1
fix the D-pad, even with the new swivel pad it has, its still very bad
move the left stick down, on the same plane as the right stick, it makes no sense to have it up.
every thing else about the controller is perfect or just trivial







