1/2 sorry, tl;dr
Oh, I get it. Like codenames. Well...
[She thinks hard about this for a moment, wanting to give a good answer.]
... well, we don't really have ranks in the Defense Force, so we couldn't do it that way. But I guess - there's so many people, it's hard to say how easy it'd be to learn a bunch of new names. But I don't think it's a bad idea! I just don't really have enough experience to know how you'd do it. You and Suzaku could probably come up with a good way.