Unplanned LE.
If I was ordering one, I would be asking for a machine WITH the spelling error. Presuming this game has a huge run, the spelling errors we'll be in a minority of them, making the unique. Kind off an unplanned LE, with there own story to tell, and perhaps laugh at.
Slings:
I wondered why slings have two switches, then realised that it's only because the kicker is in the middle. It may have been that Stern saw it as simple as that by using the opertunity of putting in only one switch with no kicker taking up the middle position. They probably didn't realise it would affect the sensitivity of ball detection.
There may be an opportunity for a mod here. Tap of two extra switches and surface mount them. Perhaps even add an optical sensor that sees the rubber move. Or maybe a simple bending of the switch leaves will be good enough.
