We've got the Beaufort, Beaufighter and kittyhawk, the only other units I would have liked to see for the Aussies would have been the Boomerang or Wirraway. The iconic ships have been done really, at least to my limited knowledge anyway.
A revised Canberra maybe. Forumini kind-of did that with the Shropshire, and WOTC with Australia, but they were sister ships.
I have a custom card that drops the Canberra to 12 pts, ups AA to 6, and adds Raider Hunter. Compared to the Australia, it has more offense but less defense.
I also have a refitted, hypothetical version for 1942. That Canberra gets armor 4 and has stats identical to the Shropshire with different specials. It keeps the Raider Hunter of my revised 1939 version and adds Cruiser Leader. 15 points.
I have the cards on my home computer and plan to add them later.