If you're concerned that I'll be adhering too strictly to D&D rules, then let me reassure you that they're right at the bottom of my list as justification for anything at all.
(On the other hand, at this stage, I don't think there's anything in Virtue that throws the rules right out the window.)
Virtue doesn't touch the lawful/chaotic axis. There was discussion of implementing this, but the verdict seemed to be that it was harder to objectively guess what qualified as lawful/chaotic than it is good/evil.
Splitting up the stats further would probably clarify some situations, but I'd be concerned that there'd either be a lot of overlap, or some stats which barely changed throughout the game-- and that stats like "selfishness" wouldn't have much function beyond looking nice. I think I'm fairly satisfied with the distinction Virtue currently provides at the moment.