Am I understanding correctly that this idea of wholesomeness is purely definitory/axiomatic (like mathematics) containing no (extraordinary) claims at all, so it doesn’t make sense to ask “Is this true?” but rather “Is it useful?”, and whether “to act wholesomely is good” is just hypothesis you are even actually testing?
Because then I see its great advantage over religious moral systems, that do contain such claims that actually might be false, but people are demanded to believe them.
I would like to ask whether there is a good reason for step 1 - outline your plan. I think it would be much easier to use, if we started with just a simple plan or even with no plan, and kept improving/extending it by those iterations.