I've hacked of of these and the older Ms. Pacman into one of those Midway 12 in 1 target deals, it was a perfect combination!
One thing that comes up right away if you want to put these into a cab is that the new version has a battery save function where it automatically turns itself off if it's not touched/played for like 5-10 mins. The old Ms. Pac will stay in "attract mode" forever, just like a "real" arcade.
The "coin drop" is just a start button with an led that lights up the coin logo, a cute touch. The interesting thing about hacking these is that when you open it, you will see that the joystick works the exact opposite as a "real" arcade joystick. I just took out all the cheesy microswitches and put them in the Midway control panel, Ms Pac on the left, new one on the right and use the midway joystcks which are a little better than the jakks joysticks.
High scores are saved! Bosconian is awesome! I wonder if the no shoot hack works on Galaga, the games look SO close to the original, I just never have the patience for to try it.