Raelag is not a demon. Tieru performed the Ritual of True Nature on him, and he lost his demonic form. Regarding Isabel, you are completely wrong. At the end of the fourth mission for the mages, Isabel kidnaps Biara, and at the end of the fifth mission, we are given to understand that Isabel has already been subjected to violence. Markel Kha-Belekh did not serve him in any way; he was a complete egoist. As for the Lords – how do you judge the plot? Play through the game first, and then you can talk about the plot's inconsistencies.