Guild vs. Guild PVP

[indiscriminate_hater]

Is there any interest in Guild-on-Guild PVP on this server? One of my fondest memories from Ultima Online was guild wars, where players in opposing guilds could attack you at any time and vice versa, with no repercussions from town guards. I was thinking about how fun that might be on this server.

Say, if two guilds decided to "war" with each other -- say, for a week or even for a day -- players in the opposing guild would show red name tags to you and could be attacked at any time (excepting perhaps the planes, or previously-specified locations and situations).

Any thoughts?

getinb4 the broken record of "not classic" and "roll on red"