I have most of your sceneries and have downloaded the trial version of Las Vegas FS9.
However I have notice on your version compared to Simflyers that you do not have any night lights in the control tower, or red warning signs on the tower.
Also in other sceneries the these sorts of lights are mostly forgotten.
Is there an explanation for this, as this is the most important part of an real airport.
Some people have an an issue about grass & trees but I think the presence of tower light gives that finishing touch as the sceneries should be made as realistic as possible.
Attached you will see the Simflyer's KLAS tower at night.
Even some cheaper or free airports have