I think there can be some additions: 1) for user to be able to manage those percentages directly or using various pre-made profiles and maybe allow some random

I think there can be some additions: 1) for user to be able to manage those percentages directly or using various pre-made profiles and maybe allow some randomness mixed in; and 2) "exploraton mode" where topics with content that is "disliked but not conflicting with the core values", "disliked but they may try to convince me here" and "initially neutral, unknown or not entirely irrelevant to them" are suggested. I also think that attempting to extract the core values as hidden variables and using them to predict, or guess from oher users and external news, the future direction of their evolution can also be useful.