This is a game, otherwise nobody would give you millions of dollars to start an airline in the first place.
What fun would it be to simulate a completely regulated sky, where only one airline is allowed to serve a sector and international traffic was based on gouvernment treaties ?
I canīt see any point in that.
System always calculates on real figures, how many pilots are needed to fly your planes. If you donīt change the number of your planes but only move on to more economic models, you will end up having too many of them.You can pull them through, fire them one at a time or at once as you like, whatīs your point?
Staff costs are only one aspect of airline economics. As those may get smaller over time, all other, especially fuel, rise. Thereīs one point why you may not see better revenues besides growing competition and lower air fares.