Knock seems to be having a good year but some possible headwinds on the way if the Ryanair base closures in Spain go ahead. Knock's position without any based aircraft leaves it vulnerable to issues affecting the base airports that serve it.
Three of the four affected Spanish airports - Tenerife South, Lanzarote and Girona are destinations served from Knock. It would be quite a dent in the bucket and spade offering from the airport if all three were lost. The fourth airport, Las Palmas, is also an former Knock destination and one that they may have looked to get back if the sun routes were doing particularly well.
I suppose W routings from UK airports could work as an alternative but I'm not sure if Ryanair tend to use that option too often.