If Cortana was rampant, she would still be dying. Will, I remember reading somewhere that an A.I. choses what their hologram is going to look like and I specifically remember reading that Cortana did not want to have clothes because she didn't want to deal with the extra step in processing to give herself clothes. As far as the Domain goes, I wonder if the Domain is now imprinting itself as Cortana just because she is so recognizable to Chief and the UNSC. That being said, when Cortana was uploaded to the Domain, the information there was a two-way street. She gained information but she also transferred all of her information into the Domain. If the Domain now has control of Cortana, or what appears to be Cortana, that could definitely explain why she is not acting the same as the Cortana we all grew to love. When she uploaded herself to save herself, she gave the Domain access to all of the UNSC secrets. locations, ships, etc. This reminds me of why the Cole Protocol was written.