After watching the Skillshot Jutsu Demo I noticed that the movement looked a little bit off because of the movement animations - I think it would be nice to have the option to toggle between separate races movement animations upon character creation, or alternatively having custom movement animations implemented although I'm not sure how possible that is - I think changes like that could help separate it from it's WoW origin and allow it to be a bit more immersive.
I also think that replacing casting animations with hand signs would go a long way as far as immersion goes, even if they're simple animations.
I understand that this isn't really a game changing suggestion, but it's something I noticed and thought to mention nonetheless - it probably shouldn't be first priority, but I hope it will be given some consideration.