I like this, and I would see this as consistent with the entire notion of "freedom from the law"--that the believer does not conform to explicit and precise commandments but rather endeavors as faithfully as possible to act out the implications of God's demonstrated love in Christ in one's relationships with other persons; if that is the case, then I guess we could understand all ethical parenesis in the NT literature not as commanding but as recommending and suggesting patterns of what appropriate action. With regard to the particular questions I was raising, however, there remains a question of the consistency of the patterns suggested in Ephesians with that principle set down in Galatians 3:28. I can't really afford to get into a book-length discussion of ethics, of course, but there's also the interesting distinction that Paul makes in 1 Cor between "commandments of the Lord" and "advice given by one who is trustworthy" (if I may paraphrase). Interesting questions, these.
Regards, Carl