By added the above services they will meet there 600,000 passengers. Ryanair do this with all airports. A Palma base has long been on the cards and it's only a matter of time before it opens. I would expect Malaga to be added next.
PMI will most lightly be operated by ALC based aircraft. That would justify the 10 a/c for ALC and the increased flights to Leeds, Stansted etc.