At the moment (asterix for players with less than 20 matches, two for less than 10)

David Warner: 79.59
Steve Smith: 56.59
Matthew Renshaw**: 50.54
Adam Voges: 48.46
Sam  Heazlett** :47.11
Lynn: 45.88
Travis Dean*: 44.83
Jake Lehman*: 44.76
Khawaja: 42.58
Burns: 41.77
Callum Ferguson: 41.43
Ed Cowan: 41.1
Michael Klinger: 40.32
Shaun Marsh: 39.85

Still pretty poor but better than say 5 years ago. Also most players have similar shield and international averages. Lehman has 16 matches so nearly a long enough good period. But selecting the best players with 20 or so games
David Warner
Joe Burns
Usman Khawaja
Chris Lynn
Steve Smith
Adam Voges
With Peter neville at 7 that actually looks like a side that isn't prone to collapse and can be competitive on most days at home and away