I can't really see them doing much at Cork or Kerry
Most of the routes from those two airports are among the company's cash cows. Perhaps Kerry-Hahn and Cork-Carcassonne could be in trouble. Otherwise, they could close the Cork base and operate Cork-Dublin with Dublin-based aircraft and Cork-Gatwick on a W.
Knock would potentially have more to lose. All routes from there other than Stansted must be quite marginal.