I think we're actively looking for problems now. In all fairness, there is no real reason why you couldn't use the South East pier and bus arrivals if needs be. It can take at least up to B767 size on some gates.....
They're not in a position, nor have an ROI to build much else at the moment. They've surely reached the limit of what the original 1977 terminal can deal with in terms of bolt-ons.