The decision to test Langman back in the wing defence spot during the January Oceania Series was in response to the dominance of Australian midcourter Madison Robinson in last year's Constellation Cup.
Nippy around the court, the diminutive Robinson was the key ball distributor into Diamonds sharpshooter Caitlin Bassett, who proved virtually unstoppable under the post when delivered unstressed ball from the midcourt.
While a serious knee injury has cruelly robbed Robinson of her chance to compete in a home World Cup, the thinking remains the same - cut off the supply chain to Bassett.
Since making her debut in 2005 Langman has always been the Ferns' strongest wing defence, problem is, she has also been their first-choice centre for many of those years. And, on the evidence of Thursday night's match, that is still the case, with Langman outshining Shannon Francois after replacing the Steel midcourter at centre at halftime.
Langman was far more assertive than her younger teammate, providing a lift in gear in the Ferns' attack.
Francois' inability to stamp her mark on the centre role has muddied the waters as to what the Ferns' first string line-up looks like.
Langman was impressive at wing defence on Thursday night, forcing her opposite from the court at the first break. Yet the Ferns were equally strong in the second half when Langman moved up the court and Kayla Cullen was injected into the defensive mix.
But Taumaunu won't be fretting too much about her midcourt predicament. She now has open to her a handy change-up she can feel confident employing during the big games at the World Cup.
Ferns v South Africa
• Tomorrow, 7.30pm
Claudelands Arena, Hamilton
• Tuesday, 7.30pm
Trusts Stadium, Waitakere