Well I figured I would put the advice up now for any other Aussies who end up stumbling upon this thread .
1) Since the border re opening,︀ you will only need an exemption from DHA if you are unvaccinated.
2) For those︁ of us unvaccinated, your best bet is to apply under the 3 months category on︂ the website.
3) When completing your statutory declaration, make sure everything is formatted correctly (page︃ numbers, get the JP to sign the corner of each page and initial next to︄ that signature too, paragraph numbers etc.)
4) If you are planning to relocate, make sure︅ you get letters from accountants and lawyers that can prove your intention to move and︆ prove that you have funds to cover hotel quarantine.
@CyprusLaw helped me out on that︇ one with a letter supporting my intent to leave to Cyprus.
5) Essentially, what the︈ DHA wants to know is that you are leaving for a while. The immigration lawyer︉ that I spoke to had a theory that there is an algorithm that automatically denies︊ any request that states '3 months', so when you are writing your stat dec say︋ 'I intend to be leaving Australia for at least 4 months'. If you have second︌ passports and family overseas that can give you a letter of support, this helps greatly︍ as well, and will strengthen your case a lot.
6) They also want to be︎ confident that you have the funds to cover your flights and accomodation and hotel quarantine️ if you decide to come back. I proved this through an accountants letter and bank statements.
^Hopefully this all soon becomes obsolete and we are allowed to freely travel again.
In regards to the tax residency changes, yes I have been following these closely. I am really anxious to leave before the adhesive tax residency becomes law. Do you think they could implement all of this before the end of this financial year? Because I plan on changing my residency just before the end of the FY.