Very Newbie Guild & Cape Questions?

I created a guild just for the fun of it and for 100 gold because I am a solo + hench player. Anyway, I don't like the 4-character identifier/abreviation I used and would like to change it. How can I edit this change?

Else...who and where do I delete/remove/disband the guild with? The guild was created in Pre-Searing and I am now in Post-Searing.

It is too bad that capes are only associated with guilds and have no other in-game properties/values/effects. I wish they were an individual or guild identifier and could take on some limited magical/armor/health properties for the individual?

If you have no other members, just click the icon next to your name in the guild roster and select disband guild.