Again, that's the problem. While it'd be possible to build a halfway decent dedicated anti-light medium, why would anyone ever, ever want to do that over a fast direct-fire heavy? What advantage would a medium possibly have at anti-light over a fast heavy armed with lasers or such?
People keep having this impression that Light = Fast, Medium = Less fast, Heavy = Slow, Assault = Very slow. While it is easier to make lighter 'mechs move faster it's very easy to end up with slow lights and pretty quick heavies; even assaults that move at a somewhat decent rate for what they are (64kph or higher isn't far out of the question). If we look at the listed medium defaults - the Centurion or Hunchback - why exactly are they better at hunting lights? In fact, of the heavies listed, the Catapult matches their speed and sports jets and the Dragon surpasses them.
Edited by Victor Morson, 03 May 2012 - 10:31 AM.