Hmmmm! I'm all for being within gliding range, but I'm not sure I'd apply that to airliners
Different kettle of fish altogether, but it would be interesting to see the captains taking wagers from the first officers as to who could chop power the furthest away and still make the threshold

Look out for slipping 747's or Airbus downwind run's with Chandelle style pull ups to land into wind whilst dumping fuel! Weeeeeeeeeeeeeoooooooooowwwwwwwwww!!!!
SS