"I think Tolkien was engaged in creating a measure of purposed inconsistency, especially between sources: the Annals versus Quenta Silmarillion for example, or the variant texts regarding Numenor -- and perhaps even a bit between the long prose versions and the brief chapters of Quenta Silmarillion, or versus the poetic versions. A perfect consistency was not only not necessary, but not intended in any case."
very true, I misread a bit of your intent on the other points.
