Gradual improvements to infrastructure? Apart from the shifting of the drop off zone and the so called improvements to the road layout in the central area I can’t think of anything else that has happened in the last few years unless I have missed something.
As a side issue, got to say that since the completion of the dual carriageway to the M1 and upgrade of the M1 to 4 and 5 lanes, travelling to and from the airport has been transformed in the rush hour which must be a big bonus to the airport as they look for new airlines.