Already is being done, seeing people shout in Ul'dah offering their..."expertise" at 150-300k an hour.

And the tragic thing is, people are biting. Congratulations, Yoshi, you have made a system where high levels can prey on lower levels. I highly advise implementing open world PvP in the next patch, we could use low level ganking to complete this downward spiral, perhaps a /teabag emote while you are at it.