i am not sure that either of the things you describe are bad enough to warrant rule changes.
a lot of things can happen on one shot. it takes a 6 to have what you describe occur anyway, as opposed to something that happens a majority of the time.
i did not see the stomp ruling, just the ranged d. are we just talking about ranged d or stomps too?
if a knight runs into the wolfstar it does not get any saves. wraithknights can be humbled by graviton weapons.