One important feature we would like, if there were a window showing all the guild members, whether they are active. Green dot for guild-member has logged on within the last 24 hours, yellow dot 48 hours and red dot for the ones who haven't been active within the last 96 hours.
There should also be a way to see if a guild member has finished their guild quest.

I've attached a crude image of what I had in mind
Guild Members - overview.jpg