they wouldnt leave the slots empty...they would fill them with cheaper QCCA its that simple that dont have to have 20% of QAL crew on the A380 just have to make it available.
If QAL dont take it up they are free to fill it with QCCA or anyone else
Given that they are compelling all the QCCA crew to go to A380 they wont have any trouble filling the slots all 100%
i think its great that some SH crew want to come to LH and the FAAA has ensured that they get the part 1 conditions.
Its just a pity that in your recent EBA you couldnt lock up some transfers