These are suggestions from an "outsider"........
~ General information sessions/meet-n-greets. Were non-members can meet, interact, and learn more about BGLO's in relaxed settings (as opposed to a rush-type setting). Maybe even hold this event over a "Parent's Weekend" so that they can attend as well.
~ More sessions on what is expected from a member (or to become a member) of XYZ----very FRANK discussions (I had to piggyback off Miss Priss's post because I thought this was a GOOD suggestion). Knowing is half the battle.
~ More publicity in terms of public events and chapter achievements (i.e. the success of a fundraiser, etc). This may help to dispel the perception that BGLO's are _______(organized gangs, don't do nothing, no longer relevant, etc.).
~ Regarding publicity, maybe the campus/city's local NPHC could start a quarterly newsletter listing such events and achievements. This newsletter could be sent to local high schools, news media, campus/city administrators, local interest groups (i.e. NAACP, Urban League, etc.). The more folks know about the good things going on (instead of the bad things that usually get the attention) the better.