For the revised Cover 1:
The marquee is well off. Marquees of the period (and even now) were backlit slabs of perspex. A neon marquee would be a rare thing indeed, so it just looks weird. Its certainly not evocative of the cabs its meant to represent within the book. [I know you've said you'll address this, but I'd typed up this answer in Notepad already].
The control panel, while much
better, still isn't quite right as it sits 'on' the cab instead of 'within' it. Look at some classic 70s/80s cabs:
Space Invaders: http://www.arcade-museum.com/game_detai ... me_id=9662
Pac Man: http://www.arcade-museum.com/game_detai ... e_id=10816
Karate Champ: http://www.arcade-museum.com/game_detai ... me_id=8279
Double Dragon: http://www.arcade-museum.com/game_detai ... me_id=7619
On all of those cabs, the CP is a flat panel contained inside the cab walls - none of them has a surface that overlaps the side panel of the cab. This is typical of the majority of 'standard' cabs, not really changing until more real estate was needed for things like Gauntlet. Its a small detail, but its one of those things that makes a cab look 'right'. I think this will help kick the nostalgia button for people who haven't even visited an arcade in years, so could help with 'passing trade' if it were to get to Amazon or any of the other online publishers/sellers.
6 buttons isn't that common either. Even the JAMMA standard only allowed for 3 (plus the start button) per player.
Having said all that, Mrs Ant says she likes cover 1 the most.
She did say that cover 3 is very representative of the era by being very Tron like though, and pointed out that it showed the evolving cab designs.
With the fixed title logo I'm very much liking Cover 3, but I am now wondering why the screens have fallen out of the cabs
We shouldn't be able to see through that I think, it looks like a hole where it should be solid.