I wonder if this might entice Ryanair to take a look. Although obviously fleet commonality is an issue it would make them the dominant carrier for London with huge bases north and south of the river. Plus further growth in Italy and elsewhere. And there is a risk if Wizz were to succeed as they would then have FR surrounded by dominance at LGW/LTN (plus there is also the minuscule SEN presence which plausibly could be scaled up)