That would be fine rule change if the game designers made it. I get that flying off the board can be very punishing. But the answer is, learn to fly your ships, not change the rules we don't like.
Sure it is a harsh rule and I wouldn't enforce it against my opponent if it was their first game or two and we were not in a tournament. But the rules works fine.
Sure in a house rule situation your fine, but we just don't have the authority to make game rule decisions.