If creators want their world to be classical fantasy, then critisizing them for having orcs and elves there is a non-sense, IMO. It's like saying "your sci-fi has aliens? you suck!". I like classical fantasy, much more than pseudo-fantasy like Game of Thrones, I'm an AD&D guy, I love worlds full of ogres, trolls, gryphons, skeletons and orcs. GoT does not feel fresh to me, it feels somewhat bland, if you think of GoT in terms of fantasy, it's more like pseudo-history with some supranatural elements, but that's for another discussion.
Designers were inspired by things they grew up with, no question. It's the most common thing in the world of art.
What's interesting to me is the story of characters in the world. I read the story of Durotan, Orgrim and Frostwolf clan yesterday. And it's a really good read, it's about way the orcs lived on Draenor, about their relationship to draenei, how Durotan did not want to be part of the massacre. It's about Durotan's relationship with Ner'zhul, Velen, Drek'thar, Kil'jaeden, Gul'dan, the Horde in general, it's really rich and it feels rich and well fleshed out. And that's just one guy in the story. You have the whole Human side, and later Elves, Dwarves, Night Elves, Undead, Taurens, Naga, etc.
The story told in WarCraft III and The Frozen Throne, about Arthas, Uther, Jaina, Thrall, Grommash, Tyrande, Malfurion, Illidan, Kel'thuzad, Sylvanas, etc. is fantastic!
I don't get they left one of the most important parts of the business, the promotion, on some company that does not know what to do with it. They need to show that the world is rich and characters are interesting and deep, that it has deep lore and history, that the world feels so complete and real in terms of content. What are you doing Legendary Pictures, Blizzard and Atlas Entertainment?