So what we should want, ideally, is a metaethic that: (1) Adds up to moral normality, including moral errors, moral progress, and things you should do whether you want to or not; (2) Fits naturally into a non-mysterious universe, postulating no exception to reductionism; (3) Does not oversimplify humanity’s complicated moral arguments and many terminal values; (4) Answers all the impossible questions.
Egoism &/or Might is Right.