the Fist of Photics [FoP] sounds great, plus it has added meaning for those who understand it
I agree with the 13+ age limit as well. Even though they wont be in Beta, I still think the 13-18yo members should be able to claim they are in the guild, as they have pledged their loyalty, and will be joining up with us once beta is over
With regards to taking over the world, depending on how large our guild gets (and how large ANet allows us to get) we could have divisions of the guild that are tasked with different objectives, and guild members can choose which section they want to play with based on their mood. For example, If there is faction based PvP like in WoW, where there could be enemies entering zones to make trouble, I'd like to create a sort of Defense Force division to help protect friendly zones. We could also have an attacking division which would invade hostile areas, a division for territory control etc. This way people wont get burnt out while working towards one goal for too long, and would provide variety and structure for members.
Groundhog Day sounds fine by me, gives us a date to look forward to and might attract additional members! Is there a calendar plugin you could set up for the main site? Something like a ticker for upcoming events would be a neat addition to the site.