Updated!

For the Mtskheta entry in Georgia, the map pin for Jvari Monastery is in the wrong spot. It should be here: https://goo.gl/maps/p6CgikqTfLX2Zvt78

Current pin is miles to the north.

For Discovery Coast WHS default dot on general map is for Una Biological Reserve. This is unfortunate as this component is not open to the public. I'd suggest replacing it by Discovery NP, alternatively by Pau Brasil NP or Monte Pascoal NP.

Morne Trois Pitons
https://www.worldheritagesite.org/list/Morne+Trois+Pitons

Wouldn't it make more sense to place the dot where Google Map has the National Park icon, just east of Laudat? I know the park is huge but that's where most people go and I don't even think the park extends to the southern end where the dot is now.

That's very wrong indeed. I will update it

I propose that Lalibela have 11 locations:

"The 11 medieval monolithic cave churches of this 13th-century 'New Jerusalem' are situated in a mountainous region in the heart of Ethiopia near a traditional village with circular-shaped dwellings." (UNESCO Website)

A map of the 11 churches:
https://en.wikipedia.org/wiki/Rock-Hewn_Churches,_Lalibela#/media/File:Karta_Lalibela.PNG

The question is whether it is inscribed as a serial site with 11 locations, or as just having 1 core zone where 11 churches happen to be in.

In the first case you are right. But a quick scan around the official documents does not provide proof for that. Have you seen an official document?
In the second case we stay with 1 location. The 11 locations of the churches would then be points of interest, a further future project next to the official locations as suggested before by nfmungard.

I have no proof that it could belong to the first case.
Maybe we are in the second situation, as for the Boyne Valley (3 separate places in a central area), so I think the future project next to the official places is a good idea.
It could also highlight major places in historic centers (eg the Eiffel Tower). For example, the Kremlin and the Red Square seem to me to be 2 distinct locations; just like the Puys chain and the Limagne fault. There are plenty of examples.

It seems that Ethiopia published a management plan in 2015. (available on the WHC website). Just skimmed through it, but it does include a map with a proposed core zone and buffer zone around it - so it would be 1 site (page 30 of the document).

Bryggen: 2 locations
http://whc.unesco.org/en/list/59/multiple=1&unique_number=63

Funny, the 2nd location is only one building. Have added it.

I haven't had much time to look at these for a while, but I finally managed to get an interactive version of Czech core zones.

And here are the Welsh Sites.

In an ideal world I would like to get these for every site, but they are rather time consuming, I will see how I get on.

But any feedback is appreciated

Great job done !
The area of park in Průhonice should be moved a little bit upwards to cover fully the park area.
The real challenge should be to show all the locations of Czech sites in Krusnohory !

meltwaterfalls

Great job, very useful and nice!

Is there some way to make the labels stand out, maybe in some fancy, contrasting color?

Those are awesome maps — I like seeing the overlays on GoogleMaps. Great work, and thanks for sharing! Hope all is well!