On the surface this is shaping up to be in the B-B+ range. Very happy with Tre & Matt Milano. Dawkins and Vallejo are fine. Zay is underperforming. Personally however, I would give the draft an F. Deshaun is looking like the real deal, and as a team that doesn't have the future at QB sewn up, it's painful to see him killing it with the Texans when we could've had him.
That being said, I reserve the right to update my assessment based on continued play. Maybe Watson is a flash in the pan. I think Zay will improve with more time on the field. The biggest thing that will convince me is if the Bills land an awesome QB next year.