I don't really see how you can add anything more than relatively unimportant details to Eliezer's metaethics sequence.

By way of contrast I think Eliezer's sequence was good but stopped too soon. There was the foundation to take things further and, presumably, time constraints prohibited that. The interesting stuff starts a step or two on from where Eliezer left off and I hope Luke covers it. (Because then I can strike it off the rather long list of 'posts that I would write if I was a post writing kind of guy'.)