I'm also in the concept stage of my first cab. Jus curious, is there a way to quickly toggle video settings - specifically bezel/instruction card artwork - without having to go into the TAB menu? Because the artwork options are the only reason I'd consider a TAB button on my CP. Other than that I'd never need it, nor want it exposed to a bunch of eager players.
I'm personally sticking to a purist approach, and trying to keep as much flare, clutter, and too much intuitiveness from my CP/cabinet as possible. Maybe an Exit/Menu button, but no pause button, no open admin options, no fast forward, no save, and definitely no free credit button. I'd much prefer tokens/quarters.
Everyone gets a limited number of tokens, you get on, you play with real credit/currency on the line, try and complete the game or get a good score with what you have, and when you run out, that continue screen WILL be counting down to zero. Nothing more and nothing less than the real deal.
Of course everyone's welcome to get a new batch of tokens afterward, but distributed and moderated per play. If I did use a credit button, I'd have it locked, hidden, and moderated.
I don't know how anyone can take the time to passionately put a cabinet in their home and tolerate people playing through these games with free credits. Y'all must have a real cool circle of trusty friends, cus 90% of the fools I know will complain "wah wah these games are too hard!!" and than throw in as much free credits just to beat the whole game and never play it the way it was intended lol. It's all good though, but for the good of the games, I'm kind of against too much admin buttons myself.