It would be great to see Air Asia X to DUB as we need flights to that area of the world although i dont know how Etihad would feel about that.
I believe Aer Arann may use this to open some new routes in conjunction with the EI deal.
Monarch have met with the DAA discussing scheduled services from DUB in the past so they are interested but i dont think it'll be enough of an incentive for them to launch in these times.
Northwest have merged with Delta so we'll never see them here which is a pity.