I would disagree with the suggestion to give add'l upgrades at 50K. Of course, it would be nice for those receiving them. But there's already a huge incentive to make and retain 1P status, and that's moving from 25% to 100% bonus miles. It seems that the hole is at 75K. Having said that, perhaps 2 HK49's at 50,000 BIS miles might be OK. One concern is, that the more you reward 1P, the smaller the difference is between 1P and 1K. At present, UG's and UG priority are about the only difference left between the two. Load up too much on 1P benefits by giving 4 SWU's (2 each at 50K and 75K) and people won't have much incentive to go to 1K.