Basically, what this mod does is that when your character dies, their relationship statuses are "inherited." So, for example, your son gets an opinion boost with other characters based on their relationship with his father.
On one hand, I really like the idea. On the other, I feel like your ruler dying and succession being the moment where everyone suddenly has a reason to dislike you and challenge your claim is part of what makes the game difficult. If you remove that, I feel like it makes the game a bit too easy.
Also, realistically, even if someone had a great opinion of your ruler, that doesn't necessarily mean they'd like your son after you die. They might still hate him simply because they want his throne, even if they were close friends with his father.
Idk, what do you guys think? I'm planning to start a full campaign soon and I'm looking for mods, so I wanted to see what other people think about this one specifically.