If you guys make an airport,please DO NOT make it as other simulation games.They are horrible.You can always get a base on a real airport.I was thinking in like a common airports,but with upgrades,like -Municipal airfield-Regional airport-Intercontinental airport-
I Also got some strong airports that could be the base for every tipe.
For Municipal airport-LEAX/Velez-Málaga municipal airport.Here's a picture.

For regional airport-I got 2 examples,so first photo will be LEGR and second will be LEVT
LEGR-

LEVT-

And for intercontinental I have LEMG.iN Google earth it have 1 runway but is because map is not really updated ._.

Also,If you guys do this,please respect the long of the runways (for example,if a cube on TheoTown is 50 meters long and a runway is 3.000 meters long,just divide 3000/50 and multiply it x 0.75=45 cubes.
If you could make a biggest map,like 2500 x 2500,This idea will be better!
Thanks,
-Hugo