I think that sometimes when they try to improve airports, they don't really do worthwhile things. In San Diego, for instance, they completed a new terminal about a year ago. However, they still have only one runway with no room for another, so they can't add many more flights to fill the gates. Also, they are now considering a second parallel taxiway that is supposed to ease congestion. With out more places for the planes to land, however, this won't do much, because there aren't that many delays associated with taxiing at SAN. Finall, they converted the former PSA hangar into a comuter terminal about 1/2 way down the runway. The idea behind this was that commuters would be able to stop before reaching the terinal, turn off, and not clog taxiways at all. The problem, however, is that they almost never land close enough to the start of the runway to turn off at the terminal and they end up spending more time on the ground than if they went to the main terminals. I think soe airports are very well set up, but others just need work.