I would like to suggest the following changes to AE:
- when airline goes bankrupt first it should go on auction (the entire airline) and the other players should be allowed to get it thru some sort of auction.
- if nobody wants or able to acquire the entire airline, the other players should be able to get airports / terminals at auctions and aircrafts should go for sale as usual
Also, how about adding cargo demand to airports and introduce cargo planes?