They have tried Denmark but retrenched already.
AFKL use the Hop brand from French regionals (with full AF codes) - they may just merge these.
Would expect AFKL to know something of the typical flexible fares markets by now - Could see a UK operation of some sort - Perhaps Luton or Finningley might work.
Certainly Belgium and Western France/North West Spain would fit.
As to long haul could just see AFKL following the LH Group trend on a few tourist heavy routes deploying the TRA lower cost base with say hand full of A333 models operating for the parent rather than standalone.