I think it would greatly enhance the game, even for those who are not strictly RPers, if we could have cross-faction chatting in Cyrodiil.
Think of it this way; you have /zone for every one in your faction.
Specifically while in Cyrodiil I'd like to see something like /battlechat that would be some different color or pattern. Say the color of the person speaking was the color of their faction, and the words were .... I don't know - maybe green just for contrast.
That way it's instantly obvious "who" is speaking.
As a possible side benefit this might reduce the need for teabagging on the part of some peeps who really want to express themselves. Lets provide a little more appropriate channel.
Tenesi Faryon of Telvanni - Dunmer Sorceress who deliberately sought sacrifice into Cold Harbor to rescue her beloved.
Hisa Ni Caemaire - Altmer Sorceress, member of the Order Draconis and Adept of the House of Dibella.
Broken Branch Toothmaul - goblin (for my goblin characters, I use either orsimer or bosmer templates) Templar, member of the Order Draconis and persistently unskilled pickpocket
Mol gro Durga - Orsimer Socerer/Battlemage who died the first time when the Nibenay Valley chapterhouse of the Order Draconis was destroyed, then went back to Cold Harbor to rescue his second/partner who was still captive. He overestimated his resistance to the hopelessness of Oblivion, about to give up, and looked up to see the golden glow of atherius surrounding a beautiful young woman who extended her hand to him and said "I can help you". He carried Fianna Kingsley out of Cold Harbor on his shoulder. He carried Alvard Stower under one arm. He also irritated the Prophet who had intended the portal for only Mol and Lyris.
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Order Draconis - well c'mon there has to be some explanation for all those dragon tattoos.
House of Dibella - If you have ever seen or read "Memoirs of a Geisha" that's just the beginning...
Nibenay Valley Chapterhouse - Where now stands only desolate ground and a dolmen there once was a thriving community supporting one of the major chapterhouses of the Order Draconis