Good yield is available at SEN though for the core sun routes as it has a decent sized local catchment willing to pay a slight premium - certainly compared to STN - for the ease and convenience. I also struggle to name names with any great certainty, other than I’m more confident than some that Wizz would give it a go. Certainly in light of them opening bases at DSA and Cardiff.
One thing the owners have done quite well is local marketing so an outsider with little or no UK presence or brand awareness like a Voletea couldn’t be ruled out. Or Eastern finding a use for their jets.