I don't now if the story is going to keep going to the point where he ascends to a upper realm,but if it gets to that point i think it would be good if he takes control over the whole "lower realm" and when he ascends to take the most talented people and a mini army with spies so he could spread on the sects and getting easier access over information,resources and talented people so he could build his own force.
Show us the thoughts and perspective of Lucius and Narcisa.Even though he somewhat established his reputation as a genius,letting a five year old kid venture the world and forests under the protection of a possible spy from the light side doesn't seem wise.I would expect Lucius to be protective of his genius child and heir. (This is just my opinion)
The MC is someone after getting a second chance and achieving power people from his first life only could fantasize about, he was able to overcome his subconcious mental/moral restrictions(he fell to the dark side) so he could live normally in society,but now that he got power he is trying to live free without being under rules and restrictions that other people put. Those that say to not write to the author are people who think of themselves righteous and respect rules a lot,and don't like the idea that someone could do what the MC did.
An Idea: Using the hybrid form as a coping mechanism for his body to adapt to the new abilitys and get better control over those abilitys causing it. After this freakout give him better emotional control by modifing his brain.With this he can control his "paranoia" and increase social activity. Again,just ideas that came to me,not sure if they will help the story.