The role is too much work for a Fleming or Vettori when they can work 6 weeks in India for the same amount. I could see Fleming as the short form coach
The obvious candidate is McMillan for the sake of continuity. He is in the role and its a progression. As long as he keeps the boof factor to a low low low
If Macca takes over, he'd do well to replace himself as batting coach with Matt Bell who is the Whitefern's batting coaching at the moment.