People have tried but it is 100% IMPOSSSIBLE to do an accurate 2010 roster for Madden 10. You can only do so much with madden 10 because of the severe CAP (Create A Player) Limit. When the game came out you could make like 10-15 players, but after every update, the # of players you could make dropped (they added new players like Favre and Vick) and after the last madden 10 roster update, they are down to 3 CAPs. You can Edit guys from the NFL Greats but you will run out of them. A few people tried changing rookies into different players, but ultimately its not possible. I highly recommend madden 11, because as far as we have been able to see here, there is NO CAP limit (you can make as many players as you want) so we will be able to do a 2011 Roster for Madden 12, and 2012 and 2013 ect ect. your also going to see some classic rosters coming out too at some point.