Hello and best regards, the Blizzard Team.
I’m a new player, but I’ve known about WoW since its inception.
Why am I DISAPPOINTED?
For one reason: after SO MANY YEARS and such a HUGE Polish community, Blizzard hasn’t added a Polish translation to the game, while many other countries are already covered by translation.
It pains me greatly that such a loyal and large community is being neglected by Blizzard 
What’s required is if it makes sense business-wise as translating games is a loss for them.
I can tell you though with the merger into Microsoft local language support has dwindled greatly for the existing ones so it is not likely they would expand, if they don’t choose to maintain either.