The rendering is great! But as an airplane enthusiast, the scene is not composed realistically. You will never find a Piper, and B737 and A380 altogether in an airport : ) And the Airbus looks photoshopped, it is too close to the parked Boeing plane.
I like the project! In my opinion those 3d people dont make justice to the renderings. Images are pretty photorealistic but those models ruin it all. Look like fake dolls if you know what I mean.... other than that, good job!
From what I see, the target of Corona Render is mostly the architecture industry (not movies and generic CGI like Vray). Corona team should really focus on what software is mostly used in professional architecture studios. By far they use mainly 3 softwares: 3dsMax - Rhino - Sketchup. No one uses Maya, or Blender or other software in the big architecture studios (maybe a small percentage). In my humble opinion should be such a no brainer on what platform to bring Corona next.