Short haul is where it is at for Ryanair, at least with their own aircraft. They could in theory have a crack at what Norwegian are doing on the Eastern seaboard if they wanted to with the MAX.
It should be noted that Ryanair are only using the Norwegian API, just as any other 'travel agent', and using their new addition of connecting flights to work with their feed. Norwegian wont be selling onward connections on their platform for Ryanair flights.