I can understand why people would be down on Crabtree. I really can. His holdout, subsequent injuries, bad attitude, and mediocre production are cause for concern.
However, I think there is a good chance Crabtree is in the process of turning his career around. His attitude has done an about face this season, and is now considered a team first guy.
http://sports.yahoo....ug=ycn-10782065
The biggest issue for Crabtree's fantasy potential right now is the QB situation in SF.
Alex Smith threw for 200 yards or less in 10 of 16 games this year. He had one game over 275 yards all year. (291) He threw for 17 TDs on the season. That doesn't leave much room for fantasy stardom amongst your pass catchers.
There is no doubt in my mind Harbaugh would love to run an uptempo professional level passing offense. The talent level of his QB does not allow that at this point however. Harbaugh may be praising Alex Smith, calling him their guy of the future, but make no mistake about it, they will try to upgrade that position asap. Whether that is Kaepernick or someone outside the organization is yet unknown.
If, and or when they do get that QB, I think Crabtree has Nicks/Boldin type potential.
Think about it this way. Of the top 12WRs this year, only Fitz and Harvin didn't have exceptional QBs, and Harvin gets plenty of his value from the RB position.