I too would like to know the answers to these questions! I have four days left in my vacation and can probably knock out a conference or two. It probably won't take me that long either since the original base was a 2010-11 roster update.
In essence, all we're doing is getting rid of seniors/transfers and adding transfers/freshmen. I really do believe it should not take any more than a couple of hours to edit an entire conference. If a team of 4 or 5 of us step up we can probably turn out a completed roster file by next week. I'm game if anyone else is game!