Not sure it will be as bad as you think. If it goes to 200 737 guys that is about 5700 seniority. A320 CA is at 6872 now. The base is projected to grow as well. If 6872 remains the bottom guy then about 90 of the displaced pilots could slide into the A320 IAH CA slot. That leaves about 110 displaced. All of them can hold SFO, ORD, EWR 737 Capt. All but 11 can hold LAX Capt. All growing bases except EWR. All but 28 can hold EWR 75/76 Capt. Many will chase the left seat. All of them can hold 777 f/o in IAH. I would expect many to bid 787 but I doubt it will cause 787 F/O displacements in SFO.