Very good post. I might be wrong, but an observation I've made about Australia in the past 3-4 years is a reluctance to invest in youth. Apart from an absolute glittering stock of young fast bowlers the Aussies have looked to invest in blokes that are 30 + for tests and as a result the moment they start under performing the sword begins to dangle. I feel they need to create a pool of batters and keepers after the Ashes that are 23-25 and back a select few.
I'll do some analysis on that if you wish.
Age Range
|
Players
|
Details
Under 20|
0
|-
20-24|
3
|Ashton Agar (24), Pat Cummins (24), Matt Renshaw (21)
25-29|
12
|Joe Burns (28), Hilton Cartwright (25), Peter Handscomb (26), Josh Hazlewood (26), Nathan Lyon (29), Nic Maddinson (25), Mitchell Marsh (26), Glenn Maxwell (29), Joe Mennie (28), James Pattinson (27), Steven Smith (28), Mitchell Starc (27), Matthew Wade (29)
30-34|
11
|Jackson Bird (30), Callum Ferguson (32), Moises Henriques (30), Jon Holland (30), Usman Khawaja (30), Shaun Marsh (34), Peter Nevill (32), Steve O'Keefe (32), Peter Siddle (32), David Warner (31)
35-39|
1
|Adam Voges (38)
40 and over|
0
|-
Australian Test players since 01 Jan 2016, by their current ages.
As you can see, there's a pretty clear bell-curve in terms of the ages of the Australian players. It's just a normal distribution as far as I can see, centred around roughly 28 or 29 as the average age of the team. As far as I can tell, this is pretty much exactly what you would look for in a balanced Test team.
You raise the concern of there being a dearth of young batsmen though; again I'm not entirely convinced that's the case. Cartwright (25, 2 Tests), Handscomb (26; 10 Tests), Maddinson (25, 3 Tests), Marsh (26, 21 Tests) and Renshaw (21, 10 Tests) have all been given a run in the top six in the last eighteen months. Perhaps Cartwright and Maddinson could reflect on not having had enough opportunities to properly assert themselves, but at least they've had them.
Nor is it exactly essential that Australia immediately replenish their batting stocks. A top-six of Warner (31), Renshaw (21), Khawaja (30), Smith (28), Handscomb (26) and... whoever ends up at number six could be settled for anywhere up to four or five years.
In all, nine young batsmen scored over 600 Shield runs last year, of whom only two averaged over 50, one of whom broke into the Test side.
I guess what I'm saying is, it's easy to throw stones at the Australian selectors, but they've actually not done too badly.