The Cubs have an oddly intriguing group of SP prospects behind the Sanders/Gallagher/Mule tier. Schlaffer, Noland, and Kipp were discussed, but don't sleep on Nick Dean, Jostin Florentino, Evan Aschenbeck, Brooks Caple, and Sam Armstrong.
Some of those guys won't ever see the majors, but there's enough depth to merit keeping an eye on everyone.