i dont know if this would be good if you can rename them always
but as it is now its not perfect too^^
because now if a declares war to b, they could call the war "b are all noobs" ^^ and then all the tribe b would always when checking the stats see this name "b are all noobs"
if the name could be changed by both tribes which are enemies, this could also make problems, how could 2 tribes which are in war agree on the name?
i could imagine, a renames the war to "b are all noobs" then b renames the war to "a youre only loosing villages" and a renames it again to "b we are owning you" /whatever they come up with