Quoted from toyotaboy:You're probably thinking of Heighway. Not only were entire playfields swappable in under a minute, you could pull the flipper mechs out quickly since there were cutouts of the flippers (no more removing flipper bats). Their idea was that instead of replacing coil sleeves, coil stops, or springs on location, you would simply take out an entire assembly and work on whatever you needed to on a bench.
https://www.pinballnews.com/news/heighwayoursler.html
I’ve been operating essentially exclusively Sterns for a few years. I’ve thought of this modularity thing but honestly it probably would not save much time, at least in my experience. Frequently it is best to have access to the entire machine to roll balls, play test balls, quickly enter diagnostics menus as a whole etc. Certainly there are scenarios where modularity would benefit a little bit then you’re giving some time back on the removal and put back, even if the modularity is executed well.
Just one OPs thoughts.
Hope it goes well for these new guys. Pinball is fun.