mik3bravo
In view of the fact that DUB is not even on their route network would it not seem unlikely that easyJet would start operating SEN-DUB?
With regard to previous traffic figures for SEN-DUB when it was operated by Aer Lingus Regional the route carried 60,477 pax in 2013 and 61,699 in 2014 and monthly figures for the route were generally between 4,500 and 6,900 during those years. I seem to recall that at one time there were up to 3 x daily flights on the ATR72. Initially the route began as SEN-DUB-SEN but this was later changed to DUB-SEN-DUB to give an earlier arrival time for travellers to London.