ryanair's next big focus is customer service. plans are already well underway for improving this. ryanair have the customer base, majority will fly again (but obviously not the kind of people you find on these forums as it's generally people with very strong for/against arguments) and now time to work on keeping these loyal customers.
Majority of pax haven't been stung by Ryanair, like the efficiency of the airline and the punctuality as well as reliability, which well outstrips other low cost carriers. (That I'm afriad is a fact, rather than a view point as punctuality statistics show).
There will always be times people feel hard done by, I wonder how the vast amount of passengers who have been effected by cancellations to their holidays/flights by BA strikes feel!? Ryanair don't pretend to be perfect. A big area to work on is what happens when the flight has to get cancelled for whatever reason, and this will come in time.
The last 10 years has been growth growth growth...now it's time to sit back and work on the product. Watch this space, some interesting changes in the next few years.