Maroney's a pretty average runner, overshadowed by trash heap guys like Sammy Morris and Lamont Jordan.
Jackson was pretty much the definition of a bust.
Thomas looked good in his rookie year and then missed last season, but is solidifying himself as the top TE on the roster this year. He's probably the best of the day 1 picks, despite Maroney's better absolute production.
Mills looks pretty good... for a different team. I wish they had kept this guy, they could have used him.
Gostkowski was the draft's best pick. Booming kickoffs and very good accuracy have made us forget about Vinatieri.
O'Callaghan has started some games but RT remains a weak position and he is injured. Not a bad guy to have around but certainly no stud.
Mincey and Stevenson were both cut during camp and are out of the league.
Smith and Andrews both have contributed to the team, though Andrews is now out of the league but that has more to do with conduct than talent as he was a pretty good special teamer.
Altogether, I'd give the draft a C-.