I searched for Bank / Guild Did not find anything. It would be nice to have a Guild Bank for Gems/Grog/Gold I know you will ask pirates can leave and steal, well, they can either not leave or payback via 24hr timeout ect. The Guild Bank is indestructible, you can put in 50% of Gold/Grog of your Island, you can take out 200% for a set period. #discuss
Or go here and discuss. http://www.midoki.com/forum/index.php?threads/guild-treasure-chest.1628/ This belongs in the guild suggestions forum, so I'm moving it there, and closing the thread. If you want, add your discussion to the original thread I linked to. This is also already on the guild improvement master list. (I literally searched for the word "bank" in the guild section to find that post. 1st page of results.)