Uncle Sam, John Bull, and Australian and Polish national heroes wouldn't be a bad idea...Tadeusz Kosciuszko and Banjo Patterson spring to mind. We could have an Italian hero sort of like Julian Basheer on DS9, one you're always expecting will run or stab the other heroes in the back (Machiavelli, perhaps?), and a few smaller heroes for the remaining allies, probably some that are always looking for money or help with minor things... 8)