I'm not sure if this has been discussed before, but I thought I would inquire about having the option to create/purchase an airport with the intent of using it as a focus city rather then a hub. It would be a nice feature (imo) to have an option to create a focus airport which would offer a limited number of routes at a reduced price as opposed to a hub which of course has unlimited amount of routes. If you were trying to model you airline like a Southwest airlines, this feature would be of great use. As an example, a focus airport could have a maximum of 10 routes, and the cost to purchase one could be at .30 X the gate cost as opposed to the .60 X the gate for a hub. Just a thought.
Thanks
