Some of us have affectionate memories of the old wooden hut which was the terminal pre-1995, so simple and efficient in getting you through and aboard your Spacegrand Twin Otter for Belfast (even, for a while, the Genair Short 330 for Heathrow!)
There's possibly scope for something similar for flights around the Irish Sea. Anything more substantial to handle flights to the Med would be a money pit, even if it would be popular with those making comments on the Blackpool Gazette website.