All of this is true, but rotation depth on minor league deals or guys with options would need to be the play.
Cease, Soriano, Ponce. Yesavage and a signed starter #4 in your chart... only 1 can be optioned and that's Trey. Arrighetti is already depth in case Trey sux or someone gets hurt. Miles will be building up a starters workload in Buffalo most likely unless there's a lockout in which case he can't.
Berrios, Bloss and Francis are all early to mid-season problems that will open the year on the 60 day IL, so theyre not really a factor yet.
Truly I think the SP ship has sailed on Ricky T. Elite backend pen arm is now the ceiling which is still a great piece to have.