National Jet is currently recruiting and is expected to grow its fleet over the next 2 years - not sure if that is more Avros or even some of the 6 ex-JQ 717-200s.
To be honest, I don't see a need for the 717s on East Coast routes south of Cairns. The Q400 is able to provide many services efficiently and cheaply, and is the backbone of the QantasLink fleet. I would question where you would fly the 717s. The only possibility is perhaps a new BNE-AYQ, some extra BNE-ASP or some extra BNE-ISA services.
Paul Stoddart and Geoff Dixon have a good working relationship, although I cannot see OzJet operating for QantasLink. The BAe146 is not a member of the OzJet fleet and has not been seen on Norfolk Island since Norfolk Jet Express operated them a few years back.
OzJet operates NLK services on behalf of Qantas using the 737-200 configured as 110Y. IIRC, 07 now have 3 732s and operate services to Norfolk Island, on behalf on APNG BNE-POM-BNE and various charters for airlines and agencies and businesses such as Our Airline (failed Air Nauru).
Cheers