I think that the new xin is broken. I love what you (riot) were thinking, but in execution he becomes to powerful. I have played a few games on him, and his sustain is absolutely crazy right now. I think that the proper course of action would be to lower the ratio's on his W. I love the fact that it also scales on ad now, but the healing coupled with the crit on every third causes it to become a crazy amount of sustain if you build some lifesteal as well. As a previous thread said, maybe moving the crit to an active on his w would be the best course of action.