WASD movement too please--great for one-handed play if you know what I mean... It's closer to the Z button. Switching my hand from the arrows to the z button is unnecessarily cumbersome. If everything can be performed with four buttons, why not position them closer together?
Also, to take a hint from Lars Doucet, "If there is only one possible, unambiguous, non-regrettable action, the action button should just do that one thing." Not bring up a menu with a single option. The Z button in this case is the action button. I found this rather tedious.