What do you know, that's exactly what Sairei no Hebi thought!
Yuji's not going to try to the change the world if he ever crosses back over to the "good side", since thinking like that is what gets you to merge with the supreme god of the most powerful tomogara organization in the entire world. Changing the world as you desire is how a tomagara thinks. Protecting what you care about is how a flame haze thinks. (well, at least under ideal conditions)