Hi, during the War of the Thorns there was a lot of Lore mistakes, in the story. I want to talk about it.
1). Souls.
According to the book, all Night Elves that were killed by the Horde, were transforming into wisps, and then they continue to fight after.
But later it turns out, that the Horde managed to rise soulless Night Elves as forsaken. But that’s impossible, because according to the Lore, forsaken has souls in their bodies. Also later in Interview, Blizzard had told us that all Night Elves souls are in the Mow, like everyone else who was killed during that war.
Inconsistency!
2). Elune.
During the War of the Thorns story, Elune was helping Tyrande. Elune have send Tyrande an vision, and she managed to find and save Malfurion. Also Elune gave some powers to defeat Saurfang.
Later Elune also gave the powers of the Dark Moon to Tyrande, and with those powers Tyrande managed to kick the Horde out from her lands. And thats without a help of the Alliance. But now in 8.3. Tyrande says that Elune have abandon Night Elves, and she wants to find out why…
Inconsistency!
3). Druids.
Night Elves druids, are most strongest rulers of the Nature powers, the powers of the Nature realm. They can use such nature things as wind, storm, rain, and sometimes even fire. In the War of the Thorns druids have summon the wind, to make ships travel faster.
But when the burning of Teldrassil started, all the druids have suddenly forgot their abilities. They did not summon the rain to stop the fire, or something. The world most strongest nature users have been killed by such ordinary for nature thing as fire.
Inconsistency!
4). Catapults.
According to the Lore, when Archimond was defeated during War 3, he has blowup with fire, but this big fire napalm bomb was not enough to put a World Tree on fire.
According to the Lore, Teldrassil is even a bigger World Tree. While Horde catapult shots are pretty small. Imagine trying to put on fire a tree by trowing a sparks on to it. How long will it take if its possible at all? But Horde managed to burn down a World Tree with a size of the island, with a rivers and mountains on it, pretty damn fast.
Also when a catapult shoots, the shots must fall down to the ground later, at the big distance. Teldrassil is an island, and you have to use a ships to travel to the continent. In other words Horde catapults must be some cross continental weapon. If it’s possible at all, catapults shoots had to fell in to the bottom of the World Tree. But they actually was shooting it to the sky, and the burning of the World Tree have started from the top.
So Hordes catapults are not only cross continental, but also a space defense weapon, that can take down space ships…
Inconsistency!
5). Shamans.
During the War of the Thorns, Horde shamans managed to use the fire against Night Elves fleet. The fire was walking across the water! I’m not saying that it’s impossible, but if it is possible, why Horde did not use shamans to destroy Alliance fleets before, in Cata, in War 2, in BfA later???
Also it’s told that Teldrassil have burned so fast, because shamans managed to control the fire, to spread it faster. Really? Shamans forced fire-spirits to kill civilians, and they did not get any consequences, like Thrall did?
Anyway, if Shamans are so powerful, why in the hell Horde needed Dragons for in War 2? Why shamans did not burn down Alliance cities before? Why they did not use such powers against the Lich King and e.t.c?
Inconsistency!
6). Night Elves.
What kind of forces do Night Elves have? Hippogryph riders are patrolling the sky over the forests - they just disappeared during the war book.
Nighsabers patrolling the roads - disappeared .
Dryads are living the Ashenvale, helping Night Elves to guard it - disappeared.
Half of the Night Elves race are druids, with different schools - only a couple of cat druids were present.
The border is guarded by an ARMY of Silverwing Sentinels - an army was killed by a couple of rogues it seams, because that army disappeared.
Night Elves have Elune priestess, which use Elune powers to fight - priestess were mentioned as non fighters.
Night Elves Glaive throwers are used as a seage weapon - disappeared.
Night Elves also have a friends like treants, half gods, and different kind of animals - disappeared.
In other words, more than a half of those who Horde should met there, were just disappeared. Yes, Night Elves have sent their army to Silithus, but how about treants that are too big for a ships? Or Glaive throwers - Night Elves have used cannons on the ships, not Glaive throwers!!!
Inconsistency!
7). Alliance.
There are 3 Alliance race that are living in the Kalimdor. All 3 of those race were fighting against the Horde during the war against the Garrosh. But in the War of the Thorns, only Night Elves are taking actions. Other Alliance soldiers - disappeared.
Also during the siege of the Lordaeron, Void Elves have shown us, that they can open portals anywhere they want. Why they didn’t had such abilities during The War of the Thorns?
Inconsistency!
What I wanted to point out is, that there are a lot of Lore mistakes in all that story. The burning of the Teldrassil seams to be illogical. It seams that Blizzard just use Night Elves as punching bags, to create a hype over the new addon. They decided to burn down Teldrassil long before they decided how the War of the Thorns will go. They just needed to burn down a lot of civilians, to make this war as - Blood War.
btw, according to the Lore, Night Elves managed to build Darnassus in about ~ 4 Azeroth years. It’s about 1 game addon.
So, if Night Elves will not going to have a new Capital City after Shadowlands, it will be another Lore writers mistake!!! 
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what is not to like? ^^
