I don't think we should ever complain about getting new carriers at the airport. Even if it doesn't have the immediate potential of Frankfurt or Zurich, it's still revenue for a loss making airport.
We'll have to see how it affects existing flights, it seems quite close to Poznan and Gdansk (in the sense that Cork is close to Shannon...).
Also, remember that OLT Poland have a sister company in Germany that operates from Bremen. So, it gives an opportunity to build a relationship that could be more fruitful. Bremen could be a good source for inbound tourists, particularly as none of the Munster airports have any scheduled service to Bremen or Hamburg.