I have been working my way through the individual configuration step classes over the past eight months, refactoring mainly to increase testability, but also for logic where the logic appeared confused (or was confusing to me!). Suggestions for improvements in particular configuration step classes can be filed under the RTs for the various steps (though many are now classified as Resolved because the test coverage is good enough).
So I think we can resolve this ticket. Thank you very much. kid51