> While utilitarianism can be useful -- of course we should consider the outcome a policy -- I think it's a dead-end as a replacement for a bedrock moral philosophy.

Utilitarianism isn't, ever, in practice, a replacement for "bedrock moral philosophy", though this is a common strawman. Utilitarianism is a term for a feature of a "bedrock moral philosophy" (that it's rules involve maximizing some function of outcomes), distinguishing moral systems with that feature from ones which view right/wrong as inherent features of acts (or, more rarely, of other things, like individual actors) independent of outcomes.