Worst example that comes to mind is the Demo mode for Scarab Grand. I can’t tell you how many hustlers are still fooled by the wilds thinking it was a play and raced to the machine.

OMG also had a demo mode that tricked dumb hustlers as well.

Making you spend money on a wager to check abandoned equity is pretty low.

Putting in a ticket is a waste, especially in Aladdin so you can check the other wilds. God forbid if the machine ran out of tickets so now you have to wait for a slot attendant.

So for me, an anti-scavenging feature is something that waste time or money or both.