Also FR do seem to listen to punters
Of course they listen to punters, but they listen to the beancounters and the airport bosses even more.
If one particular airport puts charges up, or brings in some other blockage that makes it harder to fly there (sometimes due to noise regs outside their control), then MOL goes elsewhere.
I personally think SVQ is a great city, but ditto to Nearby ODB, where the airport is not likely to see anything commercial any time soon.
High load factors alone don't make a route. They are needed together with high yields AND low airport costs. I asked before about yields for SVQ v AGP, assuming AGP would be higher because it is on the coast, and I am guessing that is still the case. Ditto for GRQ - another great city, but easier to sell as a day excursion from the costas than as a flight destination in its own right.