The FR MAN-SNN is an interesting announcement. We will never know if SNN is subsidising this route or FR are paying 'full' usage fees. The FR SNN-MAN is potentially disastrous for SNN, if SNN-MAN is pulled by EI the base may be at risk, the schedule for the remaining flights may become less attractive, so a lot will depend on the performance of BHX. I find it hard to believe that SNN would wilfully subsidise a route already served.
Aer Lingus Regional has made gains against FR at DUB, held its own at ORK, so it remains to be seen how SNN will play out.
I agree with other posters that there seems to be a lot of potential at Cork, but why does the airport struggle to attract airlines? Is Ireland seen as an FR/EI duoploy in the industry?