I don't get it. What's the point of hiding a tabard ? If you don't want to see it, why do you wear it ?
@Bubbastic
People want their guild names to appear above their heads, which is what using the guild tabard does.
However, the actual tabards are fugly, and hide your outfit/armour.
You can cover it with a costume, but most of those are fugly too.
However people still want their guild name showing.
A hide tabard option would sort that.