I recall the "integration" talks of 08.
The DPA position was integrated seniority on basis of DOJ, however Dragon Air aircraft were to be "ring fenced" so only Dragon Air FO's could upgrade on Dragon Air aircraft. of Course CX aircraft were open to anyone, no "ring fencing" there.
The CX boys should be watching their backs right now. DPA would grab any chance at integrated seniority with both hands with scant regard for the CX crew.
I have read the archived negotiation documents and I call B/S on your recollection.
You might find a few people interested in flying a 777 here, but the majority are happy where they are at KA. No one here is trying to take your command slot, you've likely worked hard for it, however it was time to stop a cleaner with 6 months seniority bumping a 30 year captain, or even a post 08 captain.. IMHO.