end (and stop exporting) that vicious tipping culture of yours. Just pay decent wages to people in customer service.
change the design of yours bills, make them easily recognizable, with different colors and sizes like normal curencies.
take religion out of the money.
and since I’m at it, end gun culture and disarm your people. Also SUVs, end that too. And introduce controlled prices in health services, regulate, regulate, regulate, till it becomes a functional system affordable by everyone.