The only thing about the minor leagues (much like Barry Bonds) is that players not in the Players Association won't be in the game (but I'm sure you can edit the SanFran Slammer and put him on the Giants, since they will probably just change his name and his appearence a little.

EA Sports really has impressed me...I stopped buying their games after '01 when I switched to Sega Sports, but this might be the year (for baseball at least, ESPN NHL and NFL still 0wn) to rekindle an old flame with EA.