I'm curious what item annoys customers/operators the most from relatively recent changes to Stern games. I'm a bit torn between the first two:
Playfield pegs - Common to Pro models. I don't know how much money Stern really saved by this decision, but as soon as I dropped a playfield onto the latch bar trying to slide a playfield in/out, I vowed to eradicate all pegs from my collection forever. Fortunately only 1 so far.
Spike Power Switch in head - After 60 years of a common switch location, Stern decided to put the switch to the head. Studies have shown short people can't reach it without squeezing between the games.
Playfield Latches - All my games have a lockdown bar, so I'm good
Head bolts - Implemented in 2015 to replace the rotating coffin lock... a bit of a throwback.