Loving all the designs @Thorozar I have a couple of thoughts.
I think you might have gone a little bit overboard with the taxiways flanking all the gates now, I think 3 layers might be a bit excessive. I only say that because practically in real life, it's probably not that economical to have that many near the gates because I think at least one of them will remain unused most of the time. I could be wrong, but just a thought.
The only other thing with Thor National Airport is that you're not leaving yourself much room to expand landside operations should the airport get busy. Namely pickup/dropoff and the internal road network, because of the taxiways and terminal flanking either side.
That all said, I can't wait to see these airports in game!