Blueskymine, there are 4. One has returned to Qantas as a Second Officer.
Leakyboats, the 25 base-frozen slots were oversubscribed although not all MOU applicants were eligible/suitable. I note with irony that a year ago you asked how far off 'J' numbers were from a QF A330 Command. To answer your question: a 2004 QF 'J' seniority number is senior enough to retain a A380 Second Officer position, for the time being.
The real issue is why one group should be positioned such that they feel the need to contractually 'fiddle' to gain advantage over another in the first place.