I feel that options for non-Mech combat are a bit limited, AND as a result there is a skewed perception as to how tracked armour "tanks" perform within the mod because all of our current tracked tank assets are either Heavy or Assault class.
I've actually done some roaming with the Oro lately, and I've found that it moves pretty well. It's only supposed to be a 60 ton vehicle, and it moves pretty well. The only problem is, as usual, the torque and the inconsistent acceleration over rough terrain.
Though, I have started to notice that Clan units in general are far more nimble than their IS counterparts. With advantages in raw speed, armor, heatsinks, and firepower, couldn't we at least grant the lighter IS mechs the ability to outmaneuver their heavier Clan opponents?