You can have much text as you like on the back of a gold card. They really ain't worth a lot these days given how easy they are to get. I have always been a great believer in the JIB and ECS scheme, but given the time scale the card can now been gained and the amount in circulation, the industry is on its knees. At the end of the day its all about who's got the most money in their pocket each week and I bet you it ain't the person with the most amount of text of the back of a Gold Card.
Open book 2391, EAL courses, easy gain Gold Card etc etc industry will be finished within 10 years.