Aer Arann
I've said for a long time that their fleet would suit DTV's needs as there is undoubtedly a demand for a DUB service, just not 189 pax a day need.
However, without wanting to sound a defeatist, surely the usual suspects of NCL and LBA would be ahead in the queue, even with a regular FR service which, of course, doesn't offer the connections very easily.
Also, DTV and Peel will not want to damage the KLM relationship by attracting another service with european and long haul connections.