To tell the truth: I think it is fair to get a few points even if you fall. You are still showing that you can do the revolution. Maybe there was a little ice in the way where you landed and therefore you fell. Maybe you just made a little balance mistake. Does that mean that the whole jump was worthless? I think not.
But I agree that there should be less points. An automatic 3point deduction or something like that would do the trick, in my opinion. But maybe that is too much, because if then the jump is only worth 2 points someone will get negative scores (like if it was a double or so) and that is not fair either.
Maybe a minus 5 on execution (that is always relative to the score) would be better? So normaly you have -3 to +3 and for a fall it is -5?