"I know from the players we spoke to through the process they're very positive and excited about having Yvette involved," he said.
McCausland-Durie will join medical lead Melinda Parnell, physiotherapist Brett Woodley and mental skills coach Renzie Hanham as part of the overhaul of the Silver Ferns support team.
There is also the potential for other specialist coaches or advisers to be involved with the programme on a contracting basis, depending on where Southby sees the need.
"One of the strengths of Janine's style is that she does consult widely and gets a wide-range of opinions.
"Janine has a good network of people both in the sport and outside it that she can call on and some of those are the icons of the game."
McCausland-Durie has a reputation as a strong development coach, having previously served as assistant coach for the Youth World Cup winning NZ U21 side in 2005 - a team that featured many of the current crop of stars in New Zealand netball - before taking up the head coach role in 2009. She also coached the Pulse in the ANZ Championship from 2009-2011 when the team was largely filled with under-21 players.
She believes she has plenty to offer senior level, and hopes to help drive a shift back to a unique Kiwi style. "It's about bringing back some of that freshness that is really about a New Zealand approach.
"We have a different style of marking defensively, we have the ability to be a bit more creative about how we go about getting turnover ball and not be so caught up with height at times," she said.