DIBP requests for further information (RFI) in 457 stream are inconsistent - help!

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"In the year to March 2015, Australia's population growth rate continued to slow from its peak in 2008-09 and is now just below the 20-year average growth rate," said Denise Carlton from the ABS.
"The Northern Territory recorded its lowest growth rate in 11 years, at 0.2 per cent for the year ending March 2015. This is 80 per cent lower than that of March 2014. Net interstate migration losses were the greatest contributor to this slower growth, with the territory recording its largest ever interstate migration loss in the year to March 2015," said Ms. Carlton.
"Western Australia also recorded slower growth. In the past two years, net overseas migration to the state has dropped by 71 per cent, while net interstate migration has dropped to the point where the state has seen a net interstate loss. This has not been seen in over 10 years in this state."
...The following email is a perfect example of what applicants under sc176 are facing after 'Cap and Cease'"
"Dear AGENT [name removed to protect privacy]
I came across your post and thought to ask you for some advice. I will be very grateful to you because right now I and many others like me are totally devastated but not broken.
In today’s post, I will continue with my consideration of the question: “How much of a problem does Public Interest Criterion 4020 really present?”
Readers of the blog will recall that in a post earlier this week, our colleagues at Migration Alliance called attention to two recent decisions of the Federal Circuit Court where a failure to satisfy PIC 4020 had led to the refusal of visa applications. In yesterday’s post, I presented a discussion of one of those cases,
Katragadda v Minister for Immigration & Anor. Today, I turn to the second case, Sun & Ors v Minister for Immigration & Anor, (2015) FCCA 2479 (11 September 2015).
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