Nah. We have the legion and the forces of shadow to contend with after we become the army of light.
The forces of shadow will try to corrupt the titan Azeroth, our goal will to be cleanse it with the light, and when the titan is born it will be this ultimate holy titan, and we will be her army. We will go to argus to meet up with the existing army of light, tell sargeras to either join us or die in our efforts to stop the shadow. We'll go out to get rid of the shadow, which has found a world soul on some distant planet to corrupt. We don't get there in time and the final raid is Azeroth vs the shadow titan, the army of light vs the army of darkness.