[HerenIstarion]

The poll is also posted in the member only forum above, but I think the information as for vox populi would be also of assistance:

Here we go:

A) Round Earth version should be used

Consequences :

+ we will keep the revised version in accordance with J.R.R.T's latest vision
- insurmountable discord with the whole bulk of later (by book chronology) stories will arise

B) Flat Earth version should be used, with the special proviso "thus was known to men" indicating that Eldar of Valinor knew thing as it was, but mannish tradition stuck to Sun and Moon as to leaves of Trees but not as to actual planet and star

Consequences:

+ more or less as above, as
- it will make the whole thing less "true". Special indication of the kind may eliminate the feeling of monolith Silmarillion always bore to me (and as far as I know many beside me) Some parts of it will be inconsistent with others

C) Flat Earth version should be used, as for Round earth and Sun and Moon, no mention of Arda as Solar System and so forth should be made

Consequences:

+ Greater consistency with the rest of the stories
- Discord with the latest vision of J.R.R.T

If I missed any other possibility or ommitted any consequence, pray feel free to add it up in series, or comments, as you find it convenient