Could you please describe, that means explain, breakdown and let is know what the desirable package the GTD has over the GTI. Now If you mention price/money, fuel consumption, running costs etc. I'll come down to your garage and pin you up against a wall.
Ok, explain.
Kev, not sure it's possible to ignore price/money, fuel consumption, running costs etc. They all come in to play regardless of what car we all want. Otherwise I'd be driving around in an Aston Martin

Yeah the GTI is iconic but that is all a very skilful PR exercise over a considerable number of years. "Just like a Golf" etc.....
I'm not saying it doesn't deserve its title but Joe Bloggs who knows nothing about cars will believe the Golf and in particular the GTI is the car to have.
I bet you some drivers have even been fooled and bought the car simply on the fact it had GTI on the back. I'm not saying that is wrong as I have bought cars in the past purely because "I wanted that" and nothing would change my mind but now I'm older and wiser I think I would give both the GTI and GTD an equal chance to impress me.
Not sure anyone on here has the credentials to put either the GTI or GTD down unless they have owned both for a reasonable amount of time.
Lee sells cars so obviously is aware of current trends and who is to say that trend doesn't go unnoticed by VW and they start to make the GTD more desirable especially with road tax and petrol costs going the way they are going.