[...]The most obvious first principle is that a better value system should keep you alive. Being alive is foundational.[...]

Is it?

There are plenty of people that sacrify their lives for all sorts of principles. There exist quite some value systems that explicitely do not hold "being alive" for their foundational first principle!

What about immortality, if it becomes a medical reality one day? A better value system by definition, just because we are staying alive for longer?

I won't go into your derived principles, because it is not even possible to reach mutual consent about your axiomatic first principle.