Clans/Guilds (Not the factions that you have to become a warrior, mage or hunter)

I know that this is like later on in the game when they squash all these bugs and stuff, but I think it would be awesome to be able to make a guild and go on boss raids and stuff like that and to create a guild/clan you need like 100 silver that would be pretty cool I think at least.
Anyways just something that I personally think would be cool.

theres already fan made guilds like S.I.L.E.N.T and other stuffs like that look it up