I don't buy it that the number of pilots applying from regional airlines has made any difference whatsoever to the recruitment of ATP pilots. I should think that half of the pilots from these airlines have always had an application in with EZJ and most of the other jet operators. I can't think EZJ were ever short of applicants as they are well up the food chain.
I see Thomsonfly are after FO's again; but they seem to be after experienced people with low timers coming from their own FTE cadets. Jet2 have recruited heavily from the GECAT scheme run with OATS. GECAT seem to be making inroads into what, was CTC's turf i.e supplying low time pilots.