According to MLB Pipeline, the Tribe is now 14th, down from 12th (when ranked in March 2020)
https://www.mlb.com/news/2020-midseason-farm-systems-rankings
Bleacher Report has the Tribe in 10th, up from 20th when ranked in February 2020)
So it seems we're viewed as average to above average. I think that should be combined with the youth on the major league team to get an overall picture of the young talent.
We have five starters on the Indians, all of whom are 25 years old: Bieber, Plesac, Civale, Quantrill and McKenzie (24). Quantrill is someone the Indians will try as a starter.
They also have two relievers who are under 25: Karinchak and Clase. So that's seven pitchers on the major league team who are 25 or under and one more, Cam Hill, who is 26, although Hill is probably still considered a prospect. Clase is also considered a prospect even though he has some major league experience like Hill.
They also have two outfielders age 25 or under: Mercado and Naylor. Also a DH/outfielder - Reyes.
My point is that even though their farm system may fall in the 10-14 range they have nine players on the big team who are 25 or under.
They do have three infielders who are either on the final year of their contracts (Santana, Hernandez) or who need to be traded after this season (Lindor). Fortunately, they have a lot of highly ranked middle infield prospects. In one ranking three of their top seven are shortstops. First base may be a problem although Naylor has played first base in the minors and could go back there.
So between the nine young players in the bigs already and the above average farm system the Indians seem to be in pretty good shape for the long term. Next year they could take a step back assuming they lose Lindor, Santana, Hand, and possibly Ollie Perez and Hernandez.