Just a few minor changes to guilds (nothing dramatic I promise)
1. 'Tags'
This is almost self-explanatory. It is in essence just something to make it easier for people to find what they are looking for in a guild. To make it easier, here is a dramatic representation.
Guildless Knight: "Dangit, my guild's dead! I loved (insert guild name here), and I don't want to go to the forums and trawl through endless pages of 'Echo of Silence sister guild 07, only 10k ce entry fee' to find another one like it, whatever will I do?"
Creepy Salesknight: "That, my young friend, is where the GuildFinder (TM) tool comes in! see that button that magically appeared in your Friends Tab? simply click that and type in some things that you would like to see in your new guild!"
Guidless Knight: "Ooook...erm... lets see... um, I have no idea of what to type"
Creepy Salesknight: "No need to fear! just click that 'popular tags' button"
Guildless Knight: "Yep, I see it, ok...well I'm not a big Rp-er, and I think I've had enough Vana farming for one lifetime... aha! this one looks cool"
User Interface Knight: "Jelly Knights, a growing and tight-knit of passionate worshippers of the Royal Jelly (runs every 3 hours from 8-3 EST, see Officer Generic-Knight for details)
Guildless Knight: "Always loved JK, I choose you Jelly Knights!"
Creepy Saleskngiht: "Well would you look at that, a giant Apply to Join button!"
SCENE
So ya, it's kinda just turning Guilds into Steam groups (but still only 1 guild at a time, you raving socialites)
I'm fairly certain that this is 100% what the guild recruitment forum is for. The guilds list what they stand for, how they run, and how to get in. They're all in a neat list for you to sort through.