here is no interpersonal "best way" to resolve directly conflicting values.

I'm not suggesting an "interpersonal" way (as in, by a philosopher of perfect emptiness). The possibilities open for the search of "off-line" resolution of conflict (with abstract transformation of preference) are wider than those for the "on-line" method (with AIs fighting/arguing it over) and so the "best" option, for any given criterion of "best", is going to be better in "off-line" case.