I'm not excited about adding SPs because I think we can rely on our young pitchers - we have 6 young pitchers vying for 4 spots, all of whom have some ML experience (and most young SPs struggle their first time in the Show).
We also have a deep bullpen, which means if we have two SPs averaging 6 IP, then the other three just have to go 5 innings a start, which means they don't even have to get through the lineup three times most starts.
I'm just not sold on any of the three, and don't want to give them more than 3 years at a decent price.
Next year we're going to have a second wave of young pitchers competing for starting jobs in ST, and a deep Lehigh rotation. By the end of this year, the Lehigh rotation may be Anderson, Kilome, De Los Santos, Irvin, Waguespack with a Reading rotation of El Garcia, Romero, Sanchez, Medina, Howard and Suarez. Guys like Eshelman, Tavares, etc. will face an "up or out" situation.
So while we have 6 competing for 4 spots this year, we may have 6 competing for 2 spots next year.
This isn't the bad old days when we'd have one or two legitimate pitching prospects in AAA ball and we'd cross our fingers and hope they'd be able to pitch at the ML level.
Lehigh - past rotations
2008 - Happ, [Mazone, Blackley, Walrond, Knotts, Benson]
2009 - Carrasco, Carpenter, Kendrick, [Lehr, Chacin, Lopez]
2010 - Savery, Duckworth [Mazone, Carpenter, Bump]
2011 - Mathieson [Bass, Bump, Feierabend, Edell, Gordon]
2012 - Cloyd [Elarton, Cochran, Misch, Bush, Hyatt] (Pettibone 7 starts)
2013 - Morgan [Martin, Cochran, Cloyd, Smith, Valdes, Minor]
2014 - [Smith, O'Sullivan, Lincoln, Enright] (Buchanan 12 starts)
2015 - S Gonzalez, Aumont, Rodriquez, Morgan, Buchanan [Vasquez, Berken] (Nola 6 starts)
2016 - Thompson, Lively, Eflin, Buchanan [Russell, Vasquez, Klein] (Pivetta 5 starts, Asher 4 starts)
2017 - Eshelman, Thompson, Lively, Appel, Leibrandt, Pinto [C Ramos] (Tavares 7 starts)
As the young depth improved, they phased out the veteran pitchers, then upgraded the young pitchers over the last three years. Young pitchers who couldn't cut the grade were moved to the pen, traded or waived.