As the rules are currently set up, it's possible for someone to request, say, "Catullus + Roxelana" five different times. It's set up this way because otherwise there'd be no way for someone to have three requests that had overlapping characters (ex: "Catullus + Roxelana", "Catullus + Sappho" and "Roxelana + Suleiman"). Requesting the exact same thing several times is what I mean by "gaming the system".

Examples chosen at random and the characters would have to have been nominated, but hopefully you get my meaning anyway.