This controller shape and layout, move the 1-9 to the middle and add Clear, 0, and Enter to the bottom as a new row and remove the rest of the buttons.
ABXY would be 4 action buttons
Add another set of 4 action buttons as shoulder buttons like on this PlayStation Dual Shock (you could make them all the same smaller sized 1 button, and I'd be okay with that):
Change the d-pad to a disc the shape and size of a Sega Genesis 6-button controller.
If possible, make it so you can use the disc and number keys at the same time using the same controller, instead of a dual wield (not a deal breaker if it can't be done).