This sounds like what philosophers call "indirect consequentialism" or the related "two-level utilitarianism". The idea is what you say: aim for good outcomes, but use rules or virtues as heuristics because direct consequential reasoning is impractical, and it's easy to go wrong with it. If you're interested, take a look at https://plato.stanford.edu/entries/consequentialism/#:~:text... and https://en.wikipedia.org/wiki/Two-level_utilitarianism.