I can tell you and I can speak about this game for many hours. WoW is a very big part of my life as well. I've met people in that game that I've ended up being friends with for life and actually see in person at least once a year if the opportunity allows it too.
If you are talking about the name Stormbreak/Thread that was posted in MMO Champion with the Gryphon rider image that was confirmed fake because the original poster admitted it he made it using AI and many folks felt for it. However, maybe the name could still be true, but his particular "leak" isn't. A lot of people make posts on MMO-Champ as their leak fantasies lol, the "leak" season is always entertaining because out of 100 of the leaks one of them will actually turn out to be a real leak.
I remember seeing the Dragonflight poster leaking on Reddit and that was the real deal. Then a cinematic shot got leaked along with the Dracthyr images and that was it for Dragonflight.
I am not sure how I am going to feel about a whole expansion taking place Underground assuming that is the case. No one really liked underground stuff. Deepholm was boring in Cataclysm and Zaralek Caverns in Dragonflight weren't that great. The tech was impressive on how you enter and exit it for sure and I have a feeling that Zaralek Caverns was a testing ground for the general public to see how people react and most people do not like it including myself.
What I believe most people want including me is a WoW 2/Remake/Refresh and they've been slowly going towards that. A ton of textures and old models have been updated in DF like the Furblogs, Centaurs, Tuskarr, Gnolls, etc... but re-creating the old original continent is a massive amount of work. Ion Hazzikostas did an interview a few weeks ago with Gamespot and actually confirmed that an Azeroth refresh is not a question of if but rather of when and it is a matter of time and that is happening sooner or later. Now imagine a fully re-created old world with new modern day systems and World quests, dailies and new stories. I remember Ion even saying not too long ago, they do want to add real player housing to the game that is completely different from the mess that was garrisons, and it could work here probably somehow.
As much as I want a remake of it for the 20th anniversary I do not believe we will see it then. I believe the next expansion will just be another standard procedure and a remake will have to come in when something massive happens with the story. Like the bad guys win and Azeroth gets consumed and then reborn or something like that or it could be the other way around. Another expansion I really want is a full-on Black Empire expansion. BFA really fucked up N'Zoth, but I do not believe he is dead and I bet you it was his plan all along to be "defeated" cause he is a manipulator and a deceiver. A legit old god Azeroth would be amazing, Yog'sarron was/is one of my favorite bosses in WoW ever.
There are still plenty of loose ends though including the following:
1 - Where is Medivh since Legion ?
2 - Where is the Light and what is going to happen to Calia Menethil?
3 - Void has been building up forever, where is it?
4 - Nazrasim/Denathrius is not dead and something will be happening to them
5 - When will the Sword be taken out in Silithus? Anytime someone asked Ion Hazzikostas about the sword his answer was always "What sword?" with a straight face. Straight up trolling, this is a hint that I believe that the sword is being taken out next and is the next expansion. Hence, why he says "What sword" as if its no longer there.
6 - Where is Azshara?
7 - No way N'Zoth is truly dead
8 - There is a double agent somewhere working for the Light and the Void. It's probably the dreadlord in that spaceship whose name is Lothraxion and he is a light dreadlord you can speak to him there.
9 - No way Sargears will be jailed forever and something needs to happen to Illidan sooner or later.
10 - Sylvanas will probably return as another plot point way later down the line.
11 - What is Genn Greymane doing?
12 - Why are the Druids of the Flame returning in 10.2? Is something happening with the Elementals again?
Btw I am speculating that 10.2 will arrive on November 7th, 2023 the following Tuesday after Blizzcon.
You get the idea lol.