I love your tier list. I definitely believe Xin should be tier one. When leveling his E it gives him faster clear and more slow on ganks, very tough to beat. Lots of top tier junglers try to play him as much as possible. Nocturne, i'd say tier 2. He's good, but its that lack of a dash pre-6 that gets him. It's all about the instant dash to now in the "meta". Why running gankers like skarner and Udyr have fallen out of favor unfortunately because I liked both of them. I'd almost would move olaf and mundo down just because they have no dash skill, although they do have nice slows, but I'd move J4 up because landing his combo with any other disable in lane is easy FB, and like you said when you level up is dragon strike it can hurt. But keep up the great work, love these!