I like the minimalistic design but I would make a few edits:
- Move your P1 and P2 Start buttons further to the left and put the Godzilla icons to the right of them. Or, print some little vinyl godzilla icons and put them directly on top of the buttons (still moving them to the left). Something like this except use Godzilla instead of girls:
- I'm not a fan of the button labels above your action buttons - they don't really add anything to your design and look out of place, IMO.
- Get rid of the font on the CP. It is duplicative of the marquee and clutters up your panel. I would maybe add a thin white horizontal line on the top instead just to tie into the bezel artwork or just leave it all black.
- Center the Japanese(?) font in the circle in the bezel art - it is too far up in the circle and looks off.
- Move the joystick to the left so it is not dead center. This will be more comfortable to play and will allow you to stand in the center of the cabinet while playing and not slightly to the right. I'd also make the right two action buttons exactly next to each other instead of the triangular layout you are showing currently. YMMV on this.
- Finally, and this is a sort of big one, unless you actually have hi-res pics that won't look bad blown up, I'd redo the art entirely. Not what the actual art is - I like that - but rather the style. If you could commission someone (like opt2not) to just redraw everything in a more arcadey/cartoony style I think it would go a long way. The marquee font seems simple and that may be OK as is so really it's only the side art pic of Godzilla breathing fire. You could even work in some color very subtly if you want (hint of red in the fire, hint of green in the monster, etc.).
Just some thoughts - I really like this cab.