Originally Posted by skimthetrees

I suspect the reason is that the word has gotten out that United's top elites can use a GPU to waitlist for an LH upgrade and the word on the street is they have good success clearing J->F on LH (unlike on UA metal where their chances are like rolling dice in Vegas). So UA top elites using GPU's will grab LH F space off the waitlist causing a dearth of space for the rest of us.

GPU's and the fact that United is in the process of eliminating their F product mean more demand for LH.