Now that we know time works differently in the Shadowlands, our characters will be gone from Azeroth for an unknown period of time. That amount of time is not know to us at this point, but will progressively be expanded upon as we receive more content patches.
It is wishful thinking, but I believe the time skip would be an excellent time for blizzard to create and develop Warcraft 4. There is an explanation as to why the adventurers are gone and it would be a good time to establish new hero’s and villains in the expanding WoW universe. Warcraft 4 is exactly what WoW needs to create new characters that players can get attached to and kill off some of the old characters. Essentially, it would bring the lore together and pave the way for future expansions just like Warcraft 3 did.
Would you like to see a Warcraft 4?