Runway length at DUB for a fully-loaded 77W >3000m. Granted, you certainly won't have a full load of fuel but they would be cutting a fine line if they are consistently putting on 440 pax and bags (which they would have to in order to warrant a T7) and freight plus fuel and reserves?
It will either mean they will pressure the authority to extend the runway or not bother with a larger aircraft. Personally I can't see the first one happening, even if it did runways take a while to build
