I'd give him a 7 right now as well, but like others, I do believe he can be a future all-pro, maybe as soon as next year.
I was pretty high on him after the Jets game, but then he completely disappeared for the entire month of November, to the detriment of this team's playoff chances. Much of this has to do with scheme, as Hackett hasn't done enough to get the ball in the hands of this team's play makers, especially with liabilities along the OLine, there were several missed opportunities to throw quick screens to Sammy, and let his YAC take over and keep D's honest.