Chicago Cubs preliminary prospect list

I am now working on the Chicago Cubs Top 20 prospect list for 2015.

As is commonly known, the Cubs system is full of prospects. My first run gave me no fewer than 60 players worthy of examination. I have cut this down to 48 and even this bumps up against space/time restrictions. I'd like to cut it back to 45 at most. As always, the hard part is determining which Grade C types to include and finding the balance between ones who may be just role players but are close to the majors (of interest to traditional fantasy owners) and those further away who may have more upside (of interest to Cubs fans or dynasty owners).

Chicago Cubs 48 players

Albert Almora OF
Gioska Amaya 2B
Jeffrey Baez OF
Dallas Beeler RHP
Corey Black RHP
Paul Blackburn RHP
Kris Bryant 3B
Victor Caratini C-3B
Jeimer Candelario 3B
Dylan Cease RHP
Rashad Crawford OF
Shawon Dunston JR OF
C.J. Edwards RHP
Jake Hannemann OF
Marco Hernandez SS
Eloy Jimenez OF
Eric Jokisch LHP
Pierce Johnson RHP
Erick Leal RHP
Rafael Lopez C
Jonathan Martinez RHP
Billy McKinney OF
Jefferson Mejia RHP
Kevonte Mitchell OF
James Norwood RHP
Jeremy Null RHP
Juan Carlos Paniagua RHP
Starling Peralta RHP
Bijan Rademacher OF
Armando Rivero RHP
Donn Roach RHP
Addison Russell SS
Carson Sands LHP
Kyle Schwarber C-OF
Jorge Soler OF
Ho-Young Son SS
Justin Steele LHP
Jake Stinnett RHP
Matt Szczur OF
Tommy Thorpe LHP
Gleyber Torres SS
Daury Torrez RHP
Jen-Ho Tseng RHP
Duane Underwood RHP
Christian Villanueva 3B
Dan Vogelbach 1B
Mark Zagunis C-OF
Rob Zastrynzny LHP