looks great, although I would also go for the art on cabs, to put in the spotlights. Some of them are so amazing, they are always nice to look at. Especially the games you dont own yourself
Other idea (cheap one): highscore board for your scores and friends' scores
Another idea (expensive one):flatscreen with 80's movie clips (Belike

) or 80's movie classics like BTTF or whatever running on it on repeat
Yet another idea (commercial one): beer price list for your visitors.