Bankwest had no problems with me getting platinum this month on the basis I got rid of another card, but didn't ask for any details of it. Key thing was proving who I was, and even that was easy as the additional cardholder was my wife, who already had a card with them in case I died (morbid, but just in case assets were frozen).
Most frustrating thing has been getting the actual card. There was an eight-day delay in dispatch, and when I started receiving reminders re the card to activate it, I contacted them, so they promptly cancelled the card, and issued another with clear house delivery instructions. The call centre's statement was that the card has a note on the front saying RTS if delivered to a PO Box (WTF?), so must have travelled up the Stuart Highway and back from my PO Box.
The card arrived the next day at the house, dead on arrival. This story has been debunked since with follow-up phone calls and tweets, with some angry people at their end saying they should have known about the card printers having issues.
Anyway - I'm expecting new card tomorrow (PIN turned up today), a mere 19 days after the initial online app.
I'm looking forward to forex free transactions and points, plus the six-months interest free to cover the ski-bob bike I want to buy in Austria.