thanks. and thanks again for sharing your design in the first place.
yes, playing the joystick works fine. i had made the cutout big enough so that i can move freely.
the buttons are fine, too, as they are fairly flush with the top plate. to achieve that i had been using 7 mm spacers for that. the downside of this height is that the pots' base would have needed another millimeter to be completely hidden. so now one sees a bit their corners. but i prefer that over the buttons being recessed.
all in all it works quite well.