Rosters are all updated by me, teams missing are the Falcons, Raiders, Browns, and Buccaneers...although I will likely want to make a new release at seasons' end that will change some teams (Bucs will make it in, Rams/Saints/Dolphins may find themselves out)
Most of the ratings are the same as for the beginning of the season, although I did change around some players/teams based on performances so far. Players who were hurt prior to seasons' start and IR'd are missing, but if a player was hurt week 1 and IR'd (i.e. Orlando Pace) they still remain.
Rosters should be correct as far is the players involved. A few teams have two halfbacks starting instead of a HB/FB if they run a two back set and don't really use a FB. Also, since every D on the game is a 3-4, I have some speedy defensive ends at outside linebacker.
Sim data varies from year to year, but for the most part it looks pretty realistic. The Colts and Pats seem to always be in the AFC title game, but the NFC has a good deal of parity, with NFC East teams (Dallas, Washington, Philly) seeming to be their the most often.
Playbooks are edited to be real (or at least close) to each teams philosophies (I wish the game had some I form plays though) As far as offenses, most run 2 RB, 2 WR, 1 TE. The exceptions are the Colts, Patriots, Cardinals, Broncos, Chiefs, and Rams who run a 3 WR offense, and the Lions who have a 4 WR offense.
The only thing I didn't change was the Pro Bowl, as I don't know how to, so the Pro Bowl spots are for the 2006 season. (I.E, Tony Ugoh is listed because Tarik Glenn was in the PB in 2006)
Enjoy! Feel free to leave any feedback, positive or negative. Always looking for ways to improve.