I can't see Turkish Airlines coming to Belfast until at least 2019, but I think the route would work very well. TK have a route network that dwarfs those of the 'big three' Middle Eastern carriers, and the likely aircraft used (B739ER) with 16/135 configuration is a lot easier to fill than a B733 of Emirates. The route would help test the waters for one of the 'big three' eventually commencing Belfast flights.