Haven't read the entire thread, so if this has been discussed already, I apologize. But here's a note on Miley:
RHB vs. Miley in 2015: .272/.334/.425, 14 HR, 114 K, 54 BB in 647 PA
LHB vs. Miley in 2015: .241/.291/.382, 3 HR, 33 K, 10 BB in 184 PA
His career split is closer to neutral, so maybe it was just a blip. But given that RH sluggers like Bautista, Encarnacion, Donaldson, Tulowitzki, Machado, Jones, and Longoria still reside in the division, I can see why this might have been a consideration. SSS, obviously, but the Blue Jays, Orioles, and Yankees all hit him pretty well last year.