How about running ONE edition of a game? We're seeing with Metallica that there's not a lot of real game difference between Pro and Premium. Aside from RGB lighting and some animated toys, the game itself is essentially the same. Stern has taken to adding unnecessary bling now to rationalize charging more money.

I don't need an animated snake head and cross, a few drop targets and different cabinet art so they can charge me $2K more for a game. Add in controlled RGB lighting, bump the price of the game up a few hundred, and sell ONE version full-featured game.