I have a feeling that the FootLocker reservation system they're testing is working on cracking down on people entering at multiple malls and winning multiple pairs.
If I were in charge of developing it, I would have the user select the stores they are willing to travel to, and enter payment information. Once the "raffle" is completed the stock would be allocated one per verified account and the user charged and notified as to what store to pick up their pair.
This would stop people from winning multiple pairs and cut down on unclaimed pairs. Since corporate would be allocating the stock and basically telling the stores who to sell the shoes to, it would cut down on the backdooring and resellers snatching up FSR.
It's going to be interesting to see how it plays out and if the others implement similar systems.