Network taking over 717 operations? Well maybe.... but consider for a second the scale of moving an operation of that size, not to mention NJS currently employs what, 200+ pilots? Network would have to hire a huge chunk of them? Who says QF won't buy out NJS and run the show themselves?
I have to agree with Going Nowhere though, 717 isn't a good fit for QLD ops. A LOT of flying is going back to the Q400 because the loads are so low.... sometimes 20 pax on a MKY....