Rumor alert! Talked to a MEM based pilot and he said the MEM base chief pilot told him that MEM would eventually get 45 MD90s, and I don't know if that meant that many crews, or trips etc. Maybe the bus and 9 categories will eventually leave MEM and MD90s will takeover? That plane might be able to hit both coasts from there, like MSP. He did specifically say "45 MD90s.". Take that for what it's worth, a rumor.