Enfidha Airport was designed as a premium airport as it was actually originally planned to be a 2nd hub for Tunis air before becoming a gateway for holiday flights. I know there's more to it than air bridges but its quite an unusual airport and gives the impression that it must be an incredibly expensive airport for the airlines. Having been there trust me it is not an airport I'd expect to really see EZY or FR at. That could change in future but not surprised EZY have gone for Monastir over Enfidha. Anyway, back to Stansted...