David Kiltz wrote:
DK> It would be interesting to see whether the _-uva_ forms are a "pure"
DK> future tense or rather some kind of prospective.
I have been having this impression for already a long time. More
specifically, I suspect that the -uva formation is originally
prospective/optative and only one of its usages evolved into pure
future. I imagine that Tolkien might have been inspired by the origin
of Greek future tense or English usage of the auxiliary "will" -
originally a modal verb.