The ORK-BHX route has been a total farce for the last ten years (from a customer viewpoint). Multiple carriers, scattered schedules, even AL with their monopoly this year couldn't manage to get the timetable right with constant changes and tinkering.
At the risk of sounding controversial, surely Cork Airport could offer exclusive rights to one airline for a fixed period thus ensuring some stability for the long suffering flyer. (please don't start with the anti-competitive rants).
As per previous posts, I reckon this one will see props return to the winter schedule.