For anyone still playing 2K11, I am working on a roster that will be 100% accurate for the 2011-12 season.
I post at OperationSports.com - my gamertag / username is mkharsh33. This is for the 360.
Since 2K11 shut down their servers for sharing rosters, you'll need a 360 formatted USB stick to get them. See my thread there... I have been in that community for many years, and I also have 8 seasons worth of historic rosters that are 100% accurate (if you mine the threads there you'll find the information - you can also find a thread there called "Hardwood Classics."