Also, I quite liked the idea of say using 'jeeves' - but in the 57th century no one knows why - i.e. completely detaching it from its servant connotations to just be the abstract noun (as Imperials would think it).  Of course, the snag with this is detaching it from those connotations in *players* minds.  But in which case you could corrupt it to 'jeef', 'jeev', 'jefs' (long 'e') or even 'jeff'  ;-)   or something and maybe play on the supposed (but incorrect) connection with 'jefe' (although I believe that's pronounced rather differently).