The training of crews up to CAT III is not the issue. The limiting factors are generally the crosswinds and lack of runway. These are limiting factors because of where the airport is. So accepting this airport is what it is, nothing much will change so long as the airport doesn't screw the airlines. Do that and they will move. But also don't expect too much in the way of intercontinental destinations, the place is not up to it. I would also not hold my breath for a rail link. The airport rake cash in from parking and a proper rail link would reduce the airport's income. But if the airport has a real problem, it's the condition of the runway. I don't think there is a worse one in Europe. But being concrete, it's difficult to do overnight repairs yet some serious work will have to be done before long. How that will be accomplished will be very interesting.
PM