I actually quite like the likes/dislike system...apart from being fun by adding some emotions to their personalities, it also helps to balance; otherwise, everyone would just go for the most powerful companions, making the selection a boring no brainer.
I really really hope death/inheritance system will be toggleable. Even though it's a nice addition to the game, it won't be fit for purpose for those who wanna play a mod with the specific designed characters. It's not fun to play a LOTR mod with Gimli and Saruman's grandsons...
I'm also curious if the aging effects will be noticeable, like gray hair/balding/wrinkles on their portraits? And if the notables(guys who you can recruit from in the villages,etc) will die also?
In any case...remember TW, the wise choice in this case is to make it optional.