Dublin must surely be predicated on CityJet folding or walking away as they will have no choice but to defend home turf as if their life depended on it, which actually it may well do.
Can't see Cityjet going as they have being increasing the service recently however Flybe will probably have a cost advantage over the R jets Cityjet use. Will crew be based at DUB or night stopping. Not a issue as all other airports are bases.