Gilberto was a weird case, he was a toolsy teenager who torched Lowell at 18 when that was a thing, albeit with a ludicrous BABIP because he was very fast and just slapped everything into play. Defensively, he was kind of like early career Duran in the sense of "he's fast, he'll learn to play OF". That was 2019, then 2020 got cancelled while the system was at a low ebb. So you kind of had an 18 month period to dream on him putting everything together and being a plus CF with an above average bat. Then he never developed offensively or defensively, I mean he put up C Note level walk rates without the power or defense. I think if 2019 Gilberto were in the system today he might not ever crack the top 20. Castro has a much better approach, he's only put up a BB rate less than 10% last year in the FCL, and even that was 9.2%, and he doesn't K a ton, there's some pop there and he's still only 20. Plus it seems like he can actually play an adequate outfield. I don't think he's any risk to get popped in the Rule V, but if he has a Rafaela-esque power surge next year he could jump quickly (and remember, Rafaela in his age 20 season wasn't on anybody's radar because he was a great defender hitting .251/.305/.424; age 21 he started hitting the ball harder and now he's a stud).
Right, they seem to use Salem to get guys acclimated to full season ball and then push them to Greenville as long as the underlying metrics look good. I put Johanfran & Yuten in a bucket with Alcantara as guys who are too good for FCL but not quite ready physically for Salem. Bleis got hurt, though he would hopefully be in Greenville if healthy, Brannon got hurt, none of last year's other promising FCL grads (Abrham Liendo, Johnfrank, Lyonell James, maybe Ravelo from a D standpoint) really popped this year. Opening Day roster should be fun for Salem next year but the second half is more often than not going to be a grind.