Well.
I think this IS a good idea but Im unsure of how extensive it will become.
I mean admin staff on my site discussed doing this but we thought of it to be a local mod, Shoutbox dupe (which I couldnt release since Im not original creator).
And the other alternative I can think of, allowing others to jab in battles, could get messy
So could you give me more details on how you would want this to be and look, please?