Then on Ilos we see him with his implants for the first time and up until his final transformation.The alternate option is for those who don't like the Sithy appearance and he will simply use his new Virmire appearance (familiar armor with no mutations) up until Ilos. He will have this Sithy appearance until Virmire where he changes to his familiar armor albeit he is not yet mutated. It should help explain why the council could see him and trust him (being that he is now not mutated and bloody) and also adds to the narrative that Saren slowly changes as he becomes indoctrinated symbolizing his loss of self.The main option is based on concept art and does appear Sith like. These looks should be more Turian and less conspicuous. It introduces early forms of Saren before his heavy Geth implants.
This mod aims to both resolve and add to Saren's transformation throughout the game using hand created new meshes and HD textures.