Hi Vsmith,
Because some of your questions are in the membership selection area, GC members have no way of knowing an answer. Here is what I can tell you:
1. Bid List: A very smart and fabulous GCer took the Auburn bid list and put it into a nice spreadsheet here:
https://docs.google.com/spreadsheet/...hl=en_US#gid=5. According to this, Chi Omega had 62 bids. There were some groups with different numbers. These could be quota additions, or it could be that these numbers helped the chapters reach total. Someone who is more familiar with Auburn may be able to tell you if that was the case with the one chapter that took almost 30 more than the other groups.
#2, #3, and #4 - These are all membership selection questions that are not discussed outside of these chapters. Not even members of these sororities at Auburn will talk about membership selection (ie, it stays within the 4 walls of the room).