I made the opposite journey, from Kelethin to Qeynos, and I gotta say it was a lot of fun running through all the aggro in Butcherblock and Thundering Steppes. I made an epic journey out of it. You won't always get to go on dangerous journeys through these zones so I suggest going the long way the first one or two times you go from city to city, and save the carpet rides for when those zones no longer give any agro to you. It's very satisfying
