It will happen.
Now let’s be real. Cast all biases aside. Based on your knowledge of wow lore and patterns displayed by blizzard. What will be the next class?
Let’s see. So far each class has matched the theme of the expansion.
So that takes out dark rangers and necros as possibilities as they were not introduced in SL. Seriously doubt 10.0 will be death themed.
Now 10.0 will most likely be involving the dragon isles as they were hinted of in bfa.
So naturally people might say the dragonsworn is next. Okay possibly. But picture this…
Wrathion currently has MOTHER as a part of his group. What if the dragon isles are cloaked using titan tech similar to uldum before cata?
What if MOTHER by her self isn’t powerful enough to locate the titanic tech used to cloak them?
Wrathion then seeks out the assistance of the world greatest technological minds to help juice up MOTHER and find the isles. He journeys to Undermine and employs the help of the tinkers union, who is now made up of not just goblins, but all tech savvy races. So gnomes, mechagnonee, LFD, Draenie, maghar, forsaken, belves, etc…
They succeed in combining their most sophisticated tech with mother’s and unlock transportation between undermine and the dragon isles.
As payment for their services, wrathion funds the tinker’s union, helping expand their technological prowess, knowledge, and influence, creating the next wow class. The tinker.
Undermine is now the new oribos, connected to the isles via mother’s tech and the TU.
And that’s how Tinkers would fit into the main them of the expansion
The class is available to all races, since knowledge isn’t restricted to just a handful, if you can be an engineer you can be a Tinker.
Engineering is revamped to make it so anyone can use their gadgets, showing the difference between simple tech, and mastery of tech combat of the Tinker that only a Tinker can do.
Has 4 specs. 3 mech piloted specs, ranged DPS, tank, healer. And one 1 non piloted melee spec that summons robots and turrets to fight for you. Essentially a melee demo lock with a tech skin.
Mechs are able to use the skins of mech mounts as the Tinkers are able to weaponize them. So if you’ve unlocked the Gmod, lightforged Warframe, fel steel golem, etc, then you can fight as them.
Or you know, there also the bard because reasons. “Retches”