Last year BRS-DUB (EI and FR) carried 254,000 scheduled pax and CWL-DUB (FR and 6G) carried 100,000 sched pax. (I have been told on this MB that figures can be 'tweaked' so I give these CAA official stats with that warning).
I think that the CWL market is under served. Although there are two operators that fly to DUB from CWL & BRS, the services from BRS both use aircraft that are at least 100 seats. The CWL service on the other hand has one airline that uses a 100 seater aircraft and another that uses a smaller aircraft that only carries around 40 seats. I believe that a CWL service from DUB, 2x daily would be a good idea.
As for an EK service, I don't see why not. CWL-DXB 6x weekly. Probably using an A330. Could work I guess!
Isn't CWL getting a new dual carriageway from the M4 to provide an easy connection for passengers.
Regards,
Chris