Here's my idea from the other thread been mulling on it for few days now;
When you purchase your tickets, there should be two options;
1. I want to be the 12th player
2. I just want to watch the game
If you select option two you will not get a ticket in the KOP, that is only available for option 1. With option 1 you will get a letter with your ticket, if you have a membership card a letter will be sent to you. This letter is a pledge you take when choosing option 1, it outlines your duty as the 12th player; to support the team vocally, encourage the players. No filming or taking pictures, no slating players. (This is explained on the website before you select option 1, but the letter is a nice reminder to have, you can also bring this letter to the ground and give it to someone who is acting like a tit.)
Because you're going to sing your guts out and add to the 'Famous atmosphere™' You should get compensated. So option one tickets are reduced by 20% a further 20% is reduced if the ticket is purchased by a fan with a post code that is within 5 miles of the stadium and a further 10% if it's purchased by a young adult with a postcode that is within 5 miles of the stadium. My reasoning for this is that if I go to Barcelona and fancy watching them play whilst I'm there I wouldn't mind paying 50% more than the locals do for my ticket.
Remember option 1 is only for tickets in the KOP, the price of option 2 tickets will not change, the club will lose a bit of money on the KOP tickets but in exchange for the atmosphere.