Sadly C0 has got major financial problems right now and doesn't really have a good strategy for the future. The network is not cost-effective with not enough frequencies on many of the routes - mainly due to lack of a/c. They are trying hard to promote themselves, i.e. selling return tix on WAW-DUB route for just 20 quid but it's too late and on most of the routes, their competitiors are just cheaper!
Many experts expect them to go bankrupt within a year. That would mean many new opportunities for Wizzair, Ryanair, Norwegian and Easy Jet. Maybe also return to Polish market of Sky Europe... Though it's not really likely at the moment when they have hubs at VIE and PRG. But I still see a lot of potential for Polish LCC market!!