I'm an online commish and I can't tell you how many times GMs have crashed my sims by putting the same player in two different positions (or have faulty DH lineups if they are in the NL and vice versa).
I'd love to ask that in v7 (or any further update in v6) that there be some warning or something that won't allow a GM to put the same player in 2 different positions. I know this has been asked for before, and it won't be the last time. But my file was fubared and it causes lots of problems. There should be no reason to code in something that will crash the game 100% of the time and no reason for the computer to allow it to be imported.
/rant
Now on to Friday