I have a suggestion about the buttons layout.
I assume the main 6 buttons are mainly for fighting game, correct ?
I usually use my 2nd, middle, and ring fingers for the 3 buttons.
from what I see, the placement of the 2nd finger is a little higher and a little slope down to the ring finger...
you might want to do a print out, and try to fit your hands on the control.
I think your right wrist might have to be twisted clockwise a bit to fit this control...
if you play for a while, it might be tiring for your right wrist...
what I ended up doing is sort of rotating your 6 buttons counter-clockwise a little bit.
I find it feels better.
hope it helps !!