Imagine if you could actually accomplish something while waiting in an airport?
  1. Gym
    45 minutes to kill? Sweat, sauna, shower and fly.
  2. Movie theater
    3 hour layover in Brussels? Why not see the new Noah Baumbach or Furious 7? Plus popcorn smell in airports would probably improve moods.
  3. Pharmacy
    I'd kill to fill a prescription while I wait for a flight. Anything I hate to do normally would be considered a win in an airport.
  4. Nap station, like a Japanese business hotel. If you're gonna put un-put-up-able bars between the waiting area seats, gimme some place to sleep.
    Suggested by @kflinn1
  5. One hour dry cleaners!
    Suggested by @ouizoid