Rivet Joint - You are entitled to your opinion but if it is based on facts that are assumed or incorrect or just blind made up, that is when the issue occurs.
You bang on about the same things time and time again, making them out to be such a large issue when in fact they are not. As has already been alluded to, the back track is not ideal but it is not a limiting factor as the runway has a lot more capacity. Adding a piece of tarmac would improve the issue but do you have any concept on how much that would cost?! Then add that to the logistics of actually doing it and the planning consent, we are talking tens of millions and how quickly would you make that back? I'll give you a clue, not very! Airlines won't suddenly flock to the airport after laying a piece of asphalt, there is a lot more to it than that. EZY have been on the cards for a long long time but now the market conditions are correct for them to start.
Life in aviation is not as black and white as you think.