I agree wholeheartedly with this. I would suggest in addition to this though, that "shipping costs" be added as well. More incentive to keep the thing alive in the first place.
Seeing an Ore Truck being brought in by Chinook makes as much sense as seeing a Mammoth being brought in by a Chinook. I don't think they could carry that weight!
*goes back to making icebergs that defy logic*