Fancy Pants Checklist:
Use nicer wood for the cabinet.
Customized apron that can lightup in sync with the game.
Powder coat or chrome everything - the habitrails, coinbox, bolts, screws, mechanisms, ball rails. Have options for chrome, black, brass, or a "quantum haze" color.
A topper with an led stock ticker thingy that interacts with the phone app and lets you post customized messages. Could also show scores and game info during gameplay.
Clear coat or plus in someway the in-game toys like the drones, robot lady, subway station.
Fiber optic light show on the backglass, coindoor, cabinet, or anywhere it might look awesome.
That sounds like $2k or more in extra shit.
But there needs to be something really special besides just rarity for JJP to sell more than a just a few of these. Has to look gorgeous but also have a feature or two unique to the code or game play.