I like the idea of Dorwinion, and elf wine makers,
being in the forests off the Sea of Rhun, since there
sems to be no hint (that I recall) of Lorien being
a wine making region. And it fits in with Tolkien's
theory of giving a feeling of depth by including
barely glimpsed vistas and mysteries such as the
fate of the entwives.
For those who indulge in roleplaying, it might make
an interesting scenario to consider the history of
these elves near Rhun in the war of the ring
(perhaps they just all fled to stay with their
highly valued customer Galion, Thranduil's
butler).