Just because the next expac may be blood elf themed doesn’t mean that Quel’thelas is going to be the hub of it.
Much more than likely, given it’s title it’s going to be in an entirely new area, UNDERGROUND.
Also putting a “Please Blizzard” post in the most ignored forum of the lot is not what we call effective strategy.
Also way way way way too late to expect any major changes in an expansion that’s only a few months away from beta.