Update March 30, 2018:
There are placenames available in the new iOS version of LuckGrib!
There are names for coutries, oceans, seas, many bays and reefs along with cities and some towns and lakes.
This new feature should appear in the Mac version of LuckGrib later this year.
Identifying all of the islands in the Carribean or South Pacific is difficult - if LuckGrib could display country names it would be much easier to browse across the map, investigating possible routes and destinations. Also, on a related note, when browsing across a large country such as America, being able to see some of the city names would help in knowing exactly what I was looking at.
The answer to these reasonable requests is the same as with a previous question - this isn’t yet possible in LuckGrib - please be patient, more features are planned in the future.
If this is important to you, please let the author know.