I think that trading Castillo and a lower level prospect for Lowell could be a good idea if the Mets still have money to spend. Lowell would fit in with Omar's offseason plan of signing great guys with great clubhouse presence. He could platoon with Murphy at 1B and fill in for Wright on the few days he takes off. They could then sign Felipe Lopez for a year. I would also love for the Mets to sign Maya but that really doesn't have much to do with the trade outside of financial concerns.