I was not so content with the Spartana so I changed them. After that I decided to change the lesser generals to look a bit cooler., because I play online a lot and the lesser generals don't look so cool in my opinion. I also changed the non-Roman legionary cohorts because I wanted them to look different from the Roman legionaries. I also changed the Roman equites and now they look more like the real early Roman cavalry.
To install extract everything into the rtw data folder. Make some backups and replace the conflicting files.