I dunno - just out if the current test squad as a minimum I’d say Slipper, Frost, McReight, Valetini, Wilson, Gordon, White, Paisami & Wright all clearly improved over time. Tupou took great strides early before injuries appear to have set him back. I’m probably missing a couple.
Out of those it’s only White who improved his game OS.
I get that there are some real issues in Australian rugby and it is frustrating. I don’t understand though the need to shitcan absolutely everything. Doesn’t that just make things more depressing?