Found this on a fansite:
Have your own Guild Hall and use it as a base to plan your domination of the Guild Wars.
I"ll try to find more stuff. Also, like I said, I havn't got the game yet. AND, if you're gonna make a guild call it (suggestions)
Raging Cuddle Homos (tag RCH)
Raging Cuddle Morons (tag RCM)
EDIT: Important news, a guild hall is like a WoE castle (if you've ever played Ragnarok).
Example (taken from Guild Wars: Guild of the Week)
KT chose its guild hallâthe Isle of the Deadâfor strategic reasons. This particular guild hall has NPCs that are more difficult to bypass, and in battle, KT members can keep an eye on the enemy without having to worry about a foe slipping by them along an alternate route. These two factors enable KT members to pursue their preferred aggressive play style while having a strong fallback position if the battle goes badly.