Hypersmurf
Moderatarrrrh...
So after you've dropped the foe you're grappling from damage, you still have to spend an attack action just dumping his limp body before you can freely move again? Well, I suppose you could make an auto-win grapple check to move some distance dragging the carcass with you.
Once he's dead, is he an opponent any more? He certainly isn't an enemy.
-Hyp.