Could entirely be...
One of the texts in 7.3, titled "Alliance" says the following:
So, your Alliance still endures. Longer than I expected, though she has already planted the seeds of its downfall. She is patient, that one.
When your thrones run red with betrayal... when your holy places burn and the shattered mask hangs above your hearth... only then you will know. And it will be too late.
But it could also be that by "alliance" they mean the current status, where alliance and horde work together once again...
So it is either Jaina or Sylvanas who "planted these seeds".
I mean; we still have no idea what Sylvanas has given to Helya back in Stormheim...
"There is no end to education. It is not that you read a book, pass an examination, and finish with education. The whole of life, from the moment you are born to the moment you die, is a process of learning." by Jiddu Krishnamurti, Philosopher and Educator
the leak is pretty cool, but i HIGHLY HIGHLY doubt that if there was going to be a new class (not to mention twice in a row never happened) that it would be only 2 races, i can see tinkere being many races, human belf etc.. so i believe it is fake
Could be anyone. Shandris Feathermoon actually being an Azshari loyalist, it could be that Moira was lying the whole time and just playing nice waiting for the right moment to betray the rest of the Alliance. If the "alliance" is the Horde/Alliance alliance, it could be any outside "friendly" female of significant power. Could be Xal'atath, who is suggested to be the remnant of a fallen Old God and is known for biding her time and betraying those who follow her holder at the right moment. It could be that Azeroth herself has been corrupted enough to be void-aligned, which would line up with Mangi being a pawn and the pillars unlocking the cell (of N'zoth).
Jaina and Sylvanas are not really patient or intent on planting seeds behind masks of good will. Their destructive behaviour is pretty open and apparent, and they both do whatever they feel is the right thing right then and there. So it might be strange for it to be one of them.
Demon Hunters went to the elves though. As much as I personally love goblins and gnomes, I can't see blizzard adding tinker to only give them to the two races most players seem to consider a joke. If/when tinker gets added, they'd probably give them to at least one other race in each faction.
The Tinker class is not a legitimate leak. There is no Tinker class in 8.0. There are no new classes in 8.0.
look all i know is that if i cannot play a murloc next expac , i will quit forever
To be fair, the lore is shit, and I'm not a fan of the intergalactic nonsense with demonic spaceships, etc.
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Kul Tiras was the name of the island; Boralus was the capital, and I don't know of any lore that states that the entire island was a city.