I was the first thief to start stealing, next thing I knew peopel were asking me how and begging for their stuff back. THen a ton of people switched to thief and now there are too many thieves period. I also believe there should be lvls to it, but you should gain lvls by using the skill...not fighting. It's too easy to use at the moment, but then again so is every other skill in the game...they can all be abused.
If it makes any of you feel any better the newer, less intelligent thieves chased me in the water using steal and kept stealing from each other too so everyone's stuff fell in the water.
So no one has it. They lost more then they gained lol.