The real issue with Ryanair routes is they can seem to get dumped arbitrarily.
I can remember when Stansted to Prestwick was 10 flights a day, albeit with a 737-200. More than one I took was 100% full. Yet that route has gone completely. I also still miss the Stansted to Tampere, Finland route, I have to drive over to Heathrow, Finnair to Helsinki, then a 2 hour drive. That always seemed pretty full as well (mostly Finns, and in fact a notable number of Russians would drive from St Petersburg for it). That's gone. Tampere, Finland's second largest city, retains two Ryanair routes a few times a week to, of all places, Bremen in Germany and Budapest in Hungary. Just can't get that logic.