Personally I think Ryanair have no competition on the route now, so they are reducing it to the max profit size. Seats are for sale now, it looks like 5pw is happening.
In terms of Cork, I wouldn't be surprised to see NCE transferred to ORK, after that I think the Shannon schedule is pretty much safe (Bar the capacity decreases).
I can't see the eastern european routes going, from what I've heard they are doing exceptionally well, and have the highest yield of the year round routes at SNN.