See, there's tasteful Mame conversions, and there are tacky conversions.
Tasteful would include using the existing artwork/theme in conjunction with new controls.  IE the Q-Bert conversion posted recently in Project Announcements.
Tacky would include hacking off the sides to put on a four player panel.  Or maybe using the existing panel, but using the marble contact paper stuff as an overlay.  I did exactly *one* CP like that, and scrapped it.  It looks like crap. 
So if this is Mame'd - and Mame'd well, I applaud.  Seems this would make either a killer Multi Williams, or some hybrid thereof, since it already has a Joust bezel.
If I lived close, I'd take this in a second.  Robotron is one of my must-have games.