We are working on that to be included in the next revision along with the ability to designate a "boot to" title if you'd like to just power the cab on and have it come up to a specific title you designate. The challenge is determining between cold and warm starts, but we're working around it.
I've got a birthday on the 10th and I was trying to get something done by then and kind of roll it into some kind of birthday promotion, I'll do my best.
Regarding accuracy, my kit's code has been running for years in collectors machines all over the world, it's not only stable and bug free, it's perfectly accurate play-wise. Pac Plus doesn't have a green maze, that's just a color PROM and would require a new layout and big upcharge which just isn't worth it.
Worth mentioning is Pengo on the 96 in 1, which is accurate and features the Popcorn music everyone seems to like. Here is my Project Blog with ordering info:
http://revengeofthenerdsv.blogspot.com/