In looking at the IFA guys right now, there are probably a few different levels.
Likely MLB guys: Arias, Castro
Great prospects, but too soon to tell: Valera, JGonzales
Mid tier prospects (rising or falling): Bleis, Cespedes, Azocar, JGarcia, Monegro, YRodrigruez
Non-prospects at AA: Liendo, Alcantara, Rosario, De Leon, Sena, Cohen, Montero, Chacon, Liu
Guys who haven't appeared stateside: Soto, Delzine, Ramos, Rivas, Primera, Silverio, Brito
AA seems like an organizational filter for IFA guys. There are no projected IFA players on the Opening Day AAA squad. I can't be too excited about Soto being ranked #8 on SP considering how other DSL top 10 guys have shaked out recently (Bleis, Cespedes, Jimenez). Why have Rivas ranked 15 spots lower when he's already at his future defensive position, has plus tools across the board and is the same age as Soto? Is it just because Soto got the bigger signing bonus?