I was thinking of a secondary flight.. now im not very good at explaining things but i think it's a good idea..

When you fly, you have to wait 2 hours.. Well i was thinking that when you fly.. you have to wait like 5 or 10 minutes until you can fly again but you use a secondary flight.. maybe more expencive and if you do use it you have to wait 3 hours after you have used it..

So its like
Fly, wait 5 or 10 minutes or so, fly again if you choose to, wait three hours til you can fly again..

I think this will be useful for drug runs if you are in say Chicago with Cocaine at 9k and you tip to try find lower drugs.. you see that NO has 4k Cocaine.. fly to New Orleans, buy the Cocaine, 10 minutes or so later, fly back and sell the Cokaine for the previous price of 9k in Chicago...

Not sure what anyone else will think but personally i think it will be quite good..