Hope the guild leadership is taking the time to read HELP XPQUESTS. This represents a great opportunity to enhance guild training, reinforce values and even create good will among the general public about the guild if you create quests for the general public.
Since this mechanism is powered by reputation, taking a look at how IDEALS are set would be wise. The most efficient settings will reward you for things guild members are doing naturally.
Proteus, god of the sea
Written by my hand on the 28th of Midwinter, in the year 1208.