>>1240312Obstacle clearance is the big one. You couldn't possibly put something like this in a big city without having ODP's in certain directions that require something stupid like a 2000 ft/NM climb gradient after taking off in order to not slam into a building. I imagine taking off and landing on a banked runway would also be pretty stressful, considering that if you blow a tire or lose an engine, the subsequent loss of directional control could send you over the side a lot easier, and wing strikes would be pretty common; it would definitely require a shit ton of extra training. Instrument approaches would also be a complete wash. An ILS is expensive and there would be no way in hell an airport could maintain 36 of them at once, and if they only have an ILS in each direction the wind is most likely to come from, what's the point of the circular runway in the first place? I'd almost think ATC at a meme airfield would be less stressful, since no company in their right mind would ever send planes there.