Of further significance is the selection of Crusaders centre Jack Goodhue as injury cover for Crotty.
The consensus is Fekitoa's progress has stalled. His spontaneity has evaporated and the All Blacks selectors described him as wooden - in danger of overthinking his options.
They stuck by him last year when he was rested during the second half of the Rugby Championship - the belief being time away from the game would help him refresh.
"When you look at the breakdown of the squad, we have picked Sonny and Ngani as our two specialist 12s," All Blacks coach Steve Hansen said.
"Crotts can play both [second-five and centre], as can Anton, so we felt that if we were to lose a midfield player, we'd probably be short of a centre. When we looked at Mala and then we looked at Jack Goodhue, then Jack probably got the nod because of his ability to put people into space."