If you can figure out how elevated goblin highways exist, much less stay supported, I'll give you 10 gold. An entire infrastructure that doesn't rely on something blowing up to function, that doesn't itself blow up? I know this is a fantasy game, Blizzard, but ...
"Is it true Shammys can use Ghost Wolf indoors now (in Cataclysm)?"
It's true! Not only that, but Improved Ghost Wolf (now a talent called Ancestral Swiftness, which also boosts your run speed) is in tier 2 of the enhancement tree, making it available to any shaman who wants it. Instant cast indoor Ghost Wolf? Proof that Blizzard reads forum posts.