There are three airports (as all of you here already know):
John Fitzgerald Kennedy International Airport 
LaGuardia Airport (LGA)
and
Newark Liberty International Airport (EWR)
I just had thought while going through EWR when arriving back from Madrid with my sister and two of my parents, resulting in this question:
In your opinion, which one of these airports needs improvement in the New York City area?
Newark Liberty (I believe) is the airport that needs a ton of improvement because of the following:
Cracked ceilings
Broken elevators
Carrying everything for yourself (EX: luggage)