Mine: Truth. It's a very basic and instinctive value so it's very much related to TiSi. I tried to discard it once because it's hinders the achievement of goals,(you have to lie to people and such) but I kept feeling ridiculously bad about it.
Next is empathy. If you can relate, then you should cooperate. Also, quite primal.
Then Fun. If you don't like it, don't do it.
Discarding: Competence and Social Acceptance.
After that, no more. I try to keep it small because of utilitarianism.