I really think the sim should have something extra to hold and grasp more than just those who simply have a love for flying, and people who will do it without any goal to reach (wanting to be successful, saving up for that next plane, or hiring the best pilots etc ) it would be really nice to add an economy system something similar to Euro truck simulator or American truck simulator, if the only thing you did in that sim was simply driving from A to B with a load no economy involved I don't think that simulator would be where it is today, I feel like as we move into the next generation of flight sim it is time we simulate everything right out the box that has to do with the airplane, the airport, the passengers, the ground crew, the income from the flight, progression in great detail, even active passenger information like fspassengers has. My ideal situation would be starting an airline, buying the first plane with a loan I need to fly to pay back and eventually expand into buying my second airplane and hiring staff to man those aircraft as it grows, choosing my routes carefully to increase profits, being able to not only hire Ai pilots but also hire your friends to fly in your airlines, so even if you fly alone or in a multiplayer session with your friend your both adding money to the airline you guys are trying to build. As far as the passenger simulation goes something pretty much exactly like fspassengers that feeds info into the economy simulation meaning like if you and your fellow pilots are doing well the reputation of your airlines will grow faster and people will be willing to pay a premium to fly with you, and of a way to see how you're doing like with some sort of menu similar to fspassengers. Included in the fseconomy would be nice to the sim to keep all planes where they are supposed to be, If I land in Miami I want to come back tomorrow and still be exactly where I parked (including wear and tear on the plane). But of course leaving the option open for free flight, any plane anywhere etc. But basically a simulator and a tycoon game in one. I think this will also increase play time, when you play a tycoon game you have a urge to progress and develop your business.