Nola, and Eickhoff if healthy, are locks.
They're almost certain to add one veteran pitcher, whether a big money FA contract, a trade or a one year patch.
So that leaves two spots in April.
Leiter will probably be in the bullpen as a long reliever/6th starter, given his age and advanced skill set, he had little to learn in AAA.
We'll see if they sign Alvarez for next year, but if they do, it'll be because they think his shoulder is 100% - and that will probably depend on whether he continues to regain velocity
So that leaves two spots for Lively, Pivetta, Velasquez, Thompson and Eflin.
I think Lively and Velasquez have the inside track.
So your Lehigh rotation would be Eflin, Pivetta, Thompson, Anderson, Eshelman, Tavares
Reading rotation would be Kilome, El Garcia, Irvin, Waguespack, Viza/E Garcia/M Sanchez/Arauz
Clearwater rotation would be Romero, Sixto, Suarez, Dominquez, Mills, Medina, Falter, Fanti
Which is why I doubt they bring in more than one veteran, unless on a one year deal as a July trade candidate.
Even if 2/3s of these candidates flame out, they're going to have a young, deep group in Philly and Lehigh by 2020.