I was around A- to B+, so I went with a B. I would have preferred one of the SP had more control, but all the major needs were hit, and both Gausman and Holmes are good fits (I wouldn't mind Holmes being extended, depending on how things go).
Zeferjahn adds much needed strikeouts to the bullpen and has a lot of control. It'll be interesting to see what the lab can make of Braxton Garrett, too.
Not in love with giving up Mo/Rojas, but some of that is probably prospect bias.
If Brown/Cabrera come back healthy, the new depth will give the team a lot of options for pitcher deployment in October.
Not sure how anyone could rationally grade this lower than a B.