We have prepared for this and might include it depending before release depending on the time it implements the already queued tickets.
We have over time evolved our node system to support this feature exactly as you describe it. It will also allow us to render data maps showing which areas that are more or less congested as well as other features.
This is also in the pipeline, we have prepared for a system that’ll allow objects to get dirtier and break down depending on the number of times they have been used.
All great suggestions and stuff that’ll make operating your airport more difficult. Indeed something that is a must for the gameplay value.