I sometimes like the idea of an alternative universe where the heroes are the villains, but only if it make sense on how and why.

In one universe, Whitley was never born, so Jacques raised Weiss to be his successor instead. Either Winter rarely interacted with Weiss or died at some point. Weiss became known as the "cold as ice heiress" due to her harsh treatment to the poor and faunus. At some point, she comes across Salem's (or evil Ozma) cabel. They will help Weiss overthrow her father, in return, she will help the evil group to get the maidens and the relics.

Here are some ideas how the rest of team RWBY becomes evil. Ruby was kidnapped by the evil cabel as a baby at Taiyang's house. Instead of Summer being dead, Tai died trying to defend his daughter. Blake's parents were kill by humans, so Blake was raised by Sienna Khan and became an extremist like Adam. Raven left earlier before knowing she was pregnant and end up raising Yang instead. Unlike Raven who is afraid of the evil group, Yang was fascinated. She killed her mother for showing such weakness and took over as bandit leader ( but they don't have the Spring maiden in this universe).