Formula for Challenging Refusal of 8503 Waiver

Is there any way to challenge successfully a decision of a delegate to refuse to grant a waiver of the infamous “no further stay” condition, Condition 8503, that is commonly attached to “visitor visas”?
That question was presented once again in a case that was decided last week by Judge Siopsis of the Federal Court, Karan v Minister for Immigration and Border Protection (2017) FCA 872 (2 August 2017).
As readers will be aware, a decision of a delegate to refuse a waiver of Condition 8503 is not subject to merits review in the Administrative Appeals Tribunal.
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