i ask myself: what happened with the "eye of ashzara" trademark some years ago ? i never saw a confirmed fake info.
Anyway I am really bored of debating grammar. This is the title we're getting if it's real, and it makes grammatical sense. At the very least it makes sense with some poetic license.
After reading up on the lore, it'd be a pretty interesting choice -- not left-field like Pandaria and not eye-roll obvious like Draenor. It ties into the end of Hellfire and brings a lot of unknown-yet-familiar characters in a setting that's literally been under our noses. I dunno. Can't help but be psyched.
I'm imagining AU Azeroth where the villains are an alternate version of the Council of Tirisfal, in a similar fashion to the titular Warlords of Draenor. They'll all be killed off before the first raid tier is over, with Med'an being captured and tortured by AU!Gul'dan, forcing the humans of Lordaeron to drink the demon blood and become an army for the Legion.
*shudder*
So the expansion could be called Council of the Glades and only when talking about the council ingame you would see it as "the Council of the Glades". That's even if they call them that ingame and not just the Council of Tirisfal.
Which means your argument about "too many thes" is irrelevant.
I mean, sure, it could be the title, they probably were aiming at a good acronym (CoG rather than CotG), but it's still weird, unless they reveal a place literally called Glades.