The thing is CAN or AUS haven’t “ended up”, yet.
Look at Italy. It begun as a GER subtree and ended up a standalone nation with other even smaller nations forming ITA’s subtrees. No one can say, GJ won’t withdraw, someday, DK kit from other nations and form a new standalone nation. As more and more hardware comes into game, more and more TTs become possible.
I believe a Pucará model was in game for while before being removed (probably cancelled), I think it was meant to be a premium sadly.
Edit:
found proof about it
IA. 58A Pucara - YouTube