Having an initial tournament to decide who gets the swords is good, like you were saying 1st place gets to pick from 7, the 2nd place from 6 and so on. Then they can be challenged maybe once every hour, so a total of 24 times a day if they're even online. The degree of difficulty for being a Swordsmen should be high, you want the power you have to accept the risk, no whining about being challenge, you don't wannna be challenge give up your position. And the 7 day inactivity then the sword is taken away from you is good enough as is. And with the desth system they'll be adding to the game however its introduced I don't think you'll be getting challenged from as many people as you would think.