If sororities at many Southern universities, especially the big ones, didn't have ceilings and quotas, many sororities would die pretty rapidly. In the South, many girls know (or think they know) what sororities they want before they set foot on campus and very often they're the traditional Southern sororities. Likewise, at certain large Midwestern and Western sororities there are certain other groups that hold the reins.
Y'all may have noticed this when the rushees on GC speak of what's powerful in their area and which groups they start out wanting. I think that few NPC sororities would be willing to drop quotas, etc., because everyone is vulnerable someplace in the country and can't afford to lose big numbers of chapters. I don't care how fabulous a rush XYZ puts on at certain campuses, XYZ will likely never be one of the top groups just because of local opinion.
