Several of the last test selection would benefit from repeat involvement against the USA while Daniel Carter (if he passes a fitness test), Aaron Cruden, Ryan Crotty, Sonny Bill Williams, TJ Perenara, Augustine Pulu, Victor Vito, Patrick Tuipulotu, Ben Franks and Nathan Harris could also use some match-play.
If Ben Smith will benefit from another week to collect his sharpness then Israel Dagg has to find some of the bite missing from his work.
Ben Smith, Julian Savea, Sam Whitelock and Brodie Retallick have missed just one start in the 10 All Black tests this season and may all be excused the test with USA to get their bodies primed for the final three tests of the tour.
Savea's schedule will depend on the plan to reintroduce Ben Smith and Cory Jane's concussion recovery, while Dane Coles damaged his shoulder in Brisbane.
If McCaw doesn't start, then Kieran Read would be the likely leader after captaining the All Blacks half a dozen times last year. The only other player in the squad who has previous captaincy experience is Keven Mealamu.
USA finished second in their recent Rugby Championship when they beat Canada and Uruguay and lost to Argentina and have had players released from competitions in Europe and Japan to play the All Blacks.
Beale left out
Kurtley Beale's future in Australian rugby remains up in the air with the troubled playmaker officially overlooked yesterday for the Wallabies' spring tour.
Beale faces a code-of-conduct hearing tomorrow, the same day the squad departs for Europe, following his in-flight confrontation with Di Patston and subsequent revelations that he'd also sent lewd text messages to teammates about the former Wallabies staffer.
Seemingly not even yesterday's appointment of his Waratahs mentor and close ally Michael Cheika as the new Wallabies coach can help Beale.
With his future in Australian rugby uncertain, Beale has been linked to a switch to the NRL.
- AAP