It would make no sense in spending on FA SP/RP after the fire sell they had this season. Like it or not, we are stuck. Aside from Fulmer, I do not see any real bright spots for pitching in 2018. Shane Greene? How do we know 2017 wasn't a fluke? There is nothing in his peripherals suggesting any kind of improvement. In fact, he had/has a career high in walk rate. Neither Boyd nor Norris took a step forward, both took a step back.
Additionally, we will have one tremendously awful defensive outfield, which isn't going to help any pitcher, current or FA.
1. Fulmer (24)
2. Boyd (26)
3. Norris (24)
4. Zimmermann (31)
5. Farmer (26) or Lewicki (25)
Now that Ausmus in gone, and presumably Rich Dubee, we might see improvement. Having a better manager and a pitching coach who knows how to handle young players is key. Going back to internal candidates (McClendon, Lamont) would kill their development. Putting fast/good lateral movement Outfielders out there would help as well, but that isn't going to happen unless they kind trade Castellanos and/or Stewart for some more outfield depth.