Thanks for teh feedback everyone.
pinballwizard:
Do you mean the regular p1/2 controls? If so, the overhang gives plenty of room for wresting hands. Also my overhang will be curved, not the angled cut.
freon:
spacing will be the standard spacing you see most users doing with the 4-way, 2 buttons and spinner. I just didn't map them that well in photoshop. Expect something similar to what you see in teh Neon MAME cabinet in terms of spacing for those controls, possible even more.