Wondering if it would be possible to make Free Company Tags unique? and wondering why they aren't already?

Not a huge game breaker but my Free Company with the tag Terra has been around since release.. since then we have seen 2 more companies with the tag Terra appear.. one rose and fizzled out and the newest one was opened 6 days ago.

the tags are supposed to identify us to eachother and the people around us and seen as they wont put flags next to our names (dont talk to me about the gear emblems you cant see them all that well lol) i really think our tags should be unique.