Knew about the VS crew base rumour, but not about the DJ one - fingers crossed both come true for anyone interested!
Re: DJ to VS transfers - whilst the exchange program will continue in earnest, I have it on good information (from the same person who told me about VS setting up in SYD two months ago) that DJ crew WILL NOT automatically transfer to VS just because they are Virgin.
This, apparently, is because Virgin Blue and Virgin Atlantic are two totally different airlines (one budget, the other high-end product). The feeling in management is that in working for DJ you may not necessarily be able to provide the level of service expected of a Flight Attendant operating in Upper Class, for example.
Not my words, just the words from someone who actually works for them. Whether or not this occurs come recruitment time remains to be seen!