Miami Marlins farm system preliminary grade breakdown

I am currently working on the Miami Marlins prospect list. Here is the current distribution of grades. The final numbers should be close to this:

33 players ranked
Two Grade B+
One Grade B
Four Grade B-
12 Grade C+
14 Grade C

Andrew Heaney and Colin Moran are the Grade B+ guys as you no doubt surmised. There is some chance I may go with a Grade A- for Heaney depending on the final analysis. The Grade B guy is marginal and may wind up with a B-. Overall this is a system that has some things going for it but is not among the deeper organizations in the game in my view.