As often happens lots of members do their GQ but then there's a few spots waiting to complete and you don't know quite who hasn't done one which can slow down overall completion. I know BB mentioned about tools to help guild leaders monitor the quests and who still has to do but it would be good if there was also the option for the guild leader to assign a non-completed spot to another member.
For example 60 need to complete, 55 have completed, 5 outstanding. Rather than waiting on those 5 to complete the guild leader should be allowed to allocate them 5 spots to other guild members meaning they're effectively do their GQ more than once. This would speed up GQ completion as you tend to have members who are more than willing to do another GQ to get the overall completion.