Say I have a dozen metro lines. Right now, if I want to change the fare structure, I have to into each line and change the values. What if I had a set of fare structures - like there is for POI entries (I've made Airport, Theme Park and other demand curves). If I want to change the price of all the metro lines, it would be nice to be able to go into something like "Pricing Schemes", call up "Metro-1" and change the prices there - and have them reflected in all the lines that were assigned to the "Metro-1" pricing scheme.