em's= no ball saves, SS games= no ball saves
plenty of games like : fun house, earthshaker, dr dude, mousin around, every other system 11..blah blah blah = no ball saves.
Gottliebs from that era the same.

location games go like this:

option 1= 25 to 50 cents to play, mega extra balls turned on, specials, low replay, flat back legs, out lanes lowered posts, dirty play fields, switch issues, weak flippers, features not working, ball checks often, games basically blown out....
game gets beat, op makes basically nothing after location splits, so op doesn't care what works, op only cares if coins drop through slots. Op visits location once a month if lucky.

option 2: games cost 75 cents to $1 (or more with card swipes sometimes) to play, higher replay scores, out lanes mid to high, shorter ball saves, limited extra balls, games very well kept 100% working and clean, strong flippers, op is at location often confirming all is well, code updates, changing rubbers often and keeping games very nice and tight.

if only option 1 games are supported, quality pinball will be gone from locations again. A game set up too easy when someone puts in money getting free games for 2 hours straight on 50 cents to $1 is just not worthy for a game owner these days.

*Pinball machines are the most hands on machine with constant cash and time upkeep wise for parts.

I try to find a happy medium on my location games but I'm surely not letting someone play 2 hours for 25 or 50 cents on a well kept new stern/jjp/spooky game and I have to split with location.
I watch audits and if i see shorter ball times or anything else that seems unfair to me or unfair to a player, I strive to adjust properly.
A happy medium is the goal!

I also listen to the customers and work with them best I can with any suggestions.