[greekalumna]

Perhaps a group of students could approach the administration and the Office of Greek Life about having a student advisory board working on the project. Pitch the idea as a way for a group of students -- both Greek (NIC, NPC, and NPHC) and nongreek (think student government leaders, etc.) -- to help bring positive changes from other campus's to your school. As much as possible, approach the administration and others involved with the review with a positive attitude -- that you think that the review is a great idea because it will help a good system become even stronger. If the committee members writing the review feel like they are being "attacked" they are more likely to become defensive and their attitude towards Greek life at Pittsburgh and the review will be more likely to be negative.
Hope this helps