Building a strong team ethos is an important part of ensuring that we don't wave the white flag in November. That is what Warne is good at.
The 2016/17 season was over by November. Stubbs recruited badly (in fairness, joining the club late didn't help) and the squad was a group of players rather than a team.
Agree with sota that Warne could really build something at Rotherham given time and support.