Of the new routes by Ryanair:
Cagliari is unserved in the North West. Was served weekly last summer via a BMI Regional Charter (CAG-MAN-CAG).
Palermo is unserved currently, but Easyjet will also be starting a route this summer, LPL-PMO from 27th July
Oporto is currently served 2 weekly from LPL by Ryanair, and looks to be continuing despite the new MAN route.
Treviso is served from LBA by Ryanair and looks to be continuing. Plenty of competition to VCE proper from MAN and LPL.
Ponta Delgada used to be served 1 weekly Saturdays via a triangle route with LGW by SATA, forget when that ended but been a few years now.
Rhodes, Reus, Almeria, Belfast and Agadir have varying degrees of competition so will just have to see how it goes.