The following WHS have not had a single review in the last 7 years.
I am working on it to make this list dynamic, as an addition to the WHS without Review or Ranking page. But for now, here's the current result:

Tsingy de Bemaraha Strict Nature Reserve
Henderson Island
Lorentz National Park
Banc d'Arguin National Park
Koutammakou, the Land of the Batammariba
Old City of Sana'a
Sukur Cultural Landscape
Ecosystem and Relict Cultural Landscape of Lopé-Okanda
Harar Jugol
Cliff of Bandiagara (Land of the Dogons)
Matobo Hills
Cultural Landscape and Archaeological Remains of the Bamiyan Valley
Garamba National Park
Old Towns of Djenné
Jiuzhaigou Valley Scenic and Historic Interest Area
Mount Kenya National Park / Natural Forest
Pantanal Conservation Area
Tubbataha Reefs Natural Park
Mana Pools
Maloti Drakensberg Transboundary World Heritage Site
The Sundarbans
Manovo-Gounda St. Floris National Park
Okapi Wildlife Reserve
Fasil Ghebbi, Gondar Region
Island of Mozambique
Coro and its Port
Yungang Grottoes
Archaeological Site of Cyrene
Niokolo-Koba National Park
Mount Nimba Strict Nature Reserve
Yin Xu
Mountain Resort and its Outlying Temples, Chengde
Kujataa Greenland: Norse and Inuit Farming at the Edge of the Ice Cap
Canaima National Park
Dja Faunal Reserve
Tomb of Askia
Archaeological Site of Leptis Magna
Rio Platano Biosphere Reserve
Stone Circles of Senegambia
Nanda Devi and Valley of Flowers National Parks
León Cathedral
Archaeological Site of Sabratha
Vinales Valley
Gough and Inaccessible Islands
National History Park - Citadel, Sans-Souci, Ramiers
Ruins of the Buddhist Vihara at Paharpur
Ciudad Universitaria de Caracas
Konso Cultural Landscape
Timbuktu
Kinabalu Park
The Red Fort complex
Khajuraho Group of Monuments
Vallée de Mai Nature Reserve
Qutb Minar and its Monuments, Delhi
The Walled City of Baku with the Shirvanshah's Palace and Maiden Tower
Tipasa
Chitwan National Park
Royal Hill of Ambohimanga
Shiretoko
Melaka and George Town, historic cities of the Straits of Malacca
Fortress of Suomenlinna
Sinharaja Forest Reserve
Old Town of Ghadames
Imperial Palaces of the Ming and Qing Dynasties in Beijing and Shenyang
Summer Palace, an Imperial Garden in Beijing
Humayun's Tomb, Delhi
Kahuzi-Biega National Park
Historical Monuments of Mtskheta
Fort and Shalamar Gardens in Lahore
Osun-Osogbo Sacred Grove
Archaeological Ruins at Moenjodaro
Mount Qingcheng and the Dujiangyan Irrigation System
Historic Mosque City of Bagerhat
Mount Emei Scenic Area, including Leshan Giant Buddha Scenic Area
Kaziranga National Park
Historic Centre of the Town of Olinda
Sundarbans National Park
Ruins of Loropéni
Asante Traditional Buildings
Historic Jeddah, the Gate to Makkah
Abbey of St Gall
The Cathedral and Churches of Echmiatsin and the Archaeological Site of Zvartnots
San Millán Yuso and Suso Monasteries
Lower Valley of the Awash
Taj Mahal
Catalan Romanesque Churches of the Vall de Boi
Mudejar Architecture of Aragon
Three parallel rivers of Yunnan protected areas
Pyu Ancient Cities
Old Town of Lijiang
Cracow's Historic Centre
Group of Monuments at Mahabalipuram
Great Zimbabwe Ruins
Sagarmatha National Park
Vézelay, Church and Hill
Mogao Caves
Cultural Landscape of Honghe Hani Rice Terraces
Roman Theatre and its Surroundings and the "Triumphal Arch" of Orange
Auschwitz Birkenau - German Nazi Concentration and Extermination Camp (1940-1945)
Wooden Churches of Southern Malopolska
Redwood National and State Parks
Los Katios National Park
Millenary Benedictine Abbey of Pannonhalma and its Natural Environment
The Sassi and the park of the Rupestrian Churches of Matera
Ir.D.F. Woudagemaal (D.F. Wouda Steam Pumping Station)

Managed to integrate this as well in the WHS without Review or Ranking page, so there it will always be up-to-date.

I know a few things can still be improved, such as date format and showing of reviews that have been approved but have not been published yet. But I think it is workable already and I will work on these minor issues.

I will focus on these:

Jiuzhaigou Valley Scenic and Historic Interest Area
Yungang Grottoes
Yin Xu
Melaka and George Town, historic cities of the Straits of Malacca
Fortress of Suomenlinna
Imperial Palaces of the Ming and Qing Dynasties in Beijing and Shenyang
Summer Palace, an Imperial Garden in Beijing
Mount Qingcheng and the Dujiangyan Irrigation System
Abbey of St Gall
San Millán Yuso and Suso Monasteries
Old Town of Lijiang
Roman Theatre and its Surroundings and the "Triumphal Arch" of Orange
Ir.D.F. Woudagemaal (D.F. Wouda Steam Pumping Station)

also, I would even make a 2nd list with WHS which had only 1 review in the past 7 years.
for the TWHS would be great also a dynamic list. it would help a lot!

Interesting on the dynamic list I also find the mismatch between number of reviews and number of visitors of some sites. Historic Jeddah for example, reviewed only once but visited by 59! I dare the WHS-people travelling in Saudi at the moment (I know at least 4!) to add one.

The same more or less counts for Fort Jesus, Blue and John Crow Mountains (core zone reviews only please!), Cliff of Bandiagara and Djenné in Mali, Fasil Ghebbi in Ethiopia, Yin Xu, the Vinales Valley, Persian Garden, Meidan Emam. Maybe for some sites (like Jeddah, Vinales) all already has been said in 1 or 2 reviews!

OK -- when I'm back from traveling I'll see if I can get a review in for Redwood National and State Parks. Thanks for the list.

The ones I was aiming at are Konso, Mtskheta, Pyu, Orange (!!!), Matera and Woudagemaal. Neither is a particularly recent visit, but probably, given that Konso, long on my backlog, will be covered soon by Wojciech, my most significant review could be that of Pyu, and probably of Matera as "local" :-D So when I'm back I will focus on these! And on the new ones, of course ;-)

PS: Interestingly, with regard to Pyu cities it seems that only/mostly Halin is covered, so, despite the extensive blog post of Els, I might add what little else there's to say about Sri Ksetra... and Pyi!

Finally done ... Millenary Benedictine Abbey of Pannonhalma and its Natural Environment

Was initially surprised about Taj Mahal but I think it's because there are so many already and the excitement for reviewing it is low. Maybe trim some of the "oh wow it's great" comments. Also Lorentz National Park doesn't really have real reviews at all, just a sort of ad.

Plus some of Els' reviews are actually within the last 7 years. No harm in adding more but imho don't see the huge "rush" if she added a fresh review in the last few years already. E.g. Mtskheta

I moved most of them already to the "general" review section. But would be a good reason to add them all (if I can find the time ...), thanks for pointing that mismatch out.

I had a look and I could do 50+ minus
-the ones mentioned by others above
-what Els already sort of covered as discussed
-some that WILL be covered soon e.g. Melaka and Kinabalu Els will probably do on her next trip
-odd ones like Los Katios National Park as my review would also say just taking the boat trip is all one can do...
-and then some that are well covered by a few reviews or have many reviews might be one the backburner
plus we don't wanna have 50+ Zoe-only reviews in quick succession, right?! ;)

No! I'd have to spread them out til June 😁 - we have a batch of Saudi reviews coming in by Martina, Dholavira has just been visited by 3 community members together and Randi has promised me a review. Maybe you can focus on the marine sites and the ultra-difficult ones?
I was surprised to see the lack of reviews for Kinabalu as well. Not that I am going to climb it!

How recently do you want us to have visited the sites in question? I wouldn't be comfortable doing the European ones there that we visited in 2017/18, but some of the Chinese and Indian sites we visited in 2019 which is somehow nearly four years ago (!!!)

Hi Joel.
I think what counts most (as with all reviews) is whether you think you have something to tell, and to add to what is there already.
We do not need a 'new' review per se.
For Europe, I only see the Churches of Moldavia, and the trio Yuso and Suso Monasteries, Vall de Boi and Mudejar Architecture of Aragon, among the 'very old' ones. And they all have been reviewed 5-7 times already.
For China/India, we would be looking at Jiuzhaigou, Chengde, Yungang, Yin Xu, Nanda Devi, Red Fort, Khajuraho, Qutb Minar

Just a crazy thought but if you ever make this dynamic could it also have a "visited by me" column or is that technically too hard to implement? :)