Whats wrong with Cardiff
Lets start with road access its crap, no other way of putting it.
Everyone is obsessed with public transport and green issues, if you want to make a green statement then close the airport!! If you can't stomach that because its import for Wales to have an airport, then build a rail or proper road link to the motorway,simple
Most airports outside of LHR struggle with trying to get X % of it users out of cars, so why bother, the land is cheap car parking generates good income, oh sorry i forgot its the green argument,then close the airport, simple!!
God help CWL if baby clear off, they might not do much, but take a long look at DTV !! That is now a very green airport, a car park with no cars, a runway with no aircraft, a terminal with no Jobs an airport with no flights!!
Guess what people get in their cars and drive to LBA or Newcastle, they don't use the train or the bus and if they leave their cars at home, its because their in a taxi, simple (not very green)
So remove all the concrete and plastic crap out side allow people to kiss and fly from the front of the terminal, if your worried about the terrorist invented by Tony Blair, forget it, he's gone and so have they, if your still worried, screen them at the gates half a mile away, and let them kiss and fly!! simple
This is Wales a threat to no one, simple, certainly not Bristol