I think this showcase was fairly representative of the top talent maybe more than previous years. FWIW Kiley McDaniel mentioned the top names he saw in a Friday chat. Castillo does seem to be the arm mentioned with velocity, though not really as the top pitcher usually.
Those hitters:
Diego Cartaya, C, VZ
Noelvi Marte, SS, DR
Marco Luciano, SS, DR
Orelvis Martinez, SS, DR
there’s a bunch of candidates for the 5th spot, but I’ll go with the guy that ran a 6.37 in the 60: Alexeis Azuaje, SS, DR
Best Arms:
Osiel Rodriguez, RHP, Cuba
Richard Gallardo, RHP, VZ
Sandy Gaston, RHP, Cuba
Abraham Calzadilla, RHP, VZ
you can either take projection with Jerming Rosario, RHP, DR or now velo with Starlyn Castillo, RHP, DR