Morgan an F ( Incomplete) I disagree with. He was splitting time with Rhyan until he went on IR, I can see a D/ Incomplete, since he couldn't outright win the job from Rhyan, before the injury, but an F seems harsh.
The other thing that stood out to me was that you gave a D to King, who couldn't get off the Practice Squad, and F's and D- to players who were, for the most part, members of the 53, but mainly Inactive for games. For as healthy as the OL was most of the season, it was difficult for Glover and Monk to get any playing time, other than in the Playoff game at Philly, when guys were dropping like flies.
As for Lloyd, I would just give him an incomplete for the issues he had for the year, no letter grade at all.