That design looks downright dangerous, it is a big time flip over hazard. The control panel sticks out roughly 15-16" past the front of the cabinet. Push down on the panel and it will flip over. Have a little kid jump up and hang on a joystick and the whole thing would fall down on him.
There is a good reason why real arcade cabinets have the control panel not come out more than a few inches past the base of the cabinet.
Not to mention the fact that when you design a cabinet like that it is impossible to put a quarter in without getting down on your hands and knees.
The control panel is a nightmare of angled joysticks, too many buttons and dedicated mouse buttons a full foot behind the trackball. Why does the panel even go past the sides of the nearly 4 foot wide cabinet? It doesn't even utilize that space in any meaningful way and it makes the control panel really seem like a separate entity and not part of the cabinet as a whole.
The proportions of the cabinet are all out of whack. It is 7' feet tall with just the sides alone, it will be 7'2" once it had leg levelers on it. Most homes have 8' ceilings and most arcade games are right at about 6' tall.
However the level of detail that actually went into the completed cabinet on the designer's site was incredible. It is just a shame the basic design is dangerously flawed.