Silly from every perspective. If DL continue to dole out freebie UG's, it might as well do so to people who spend more (even though the spend-to-status link is still a bit clunky). On the other hand, if DL wants to sell F, that's what it ought to do.
The really smart move is to price F at something which sells out the cabin and be done with UG's other than as OPUP's or the occasional treat,