I've never read or watched anything related to RWBY beyond some half-interest in its Wikipedia article divulging some of the plot and information about the main characters, but aside from that, I'm oblivious to the deceased Oum's works. I do have to admit that I am interested in the sentai aspect of it, though, and if you're willing to work with a novice regarding the source material (considering you want to boldly alter most of the OC anyway) then I wouldn't mind tossing my hat in for this.