Yes, it is feasible, but the designers have ignored the locations of any fuel dumping procedure in case of emergency landing, pollutant gasses of the planes running solely towards the terminals, all turnaround/refuelling is done in the same vicinity of the departure lounges, and the need for some really creative tunnelling for entry/exit for all manner of services/maintenance/passengers.
Different planes require varying take off/landing speeds and a whole host of taxiing requirements, meaning whatever is designed is really only for the average commuter plane, none of your Concorde/Scramjet, or autogyro/Harrison Ford shenanigans.