Oh come on. I main jungle ad yi. He is awesome - fast jungler, good ganker (level 2,Q + passive ). The only thing that hurts me is that when u use Q on enemy, your champion is untargedable, but it receive dmg when u hit Aoe on the place where he wil lapear soon (for example for brand when he see yi q to him, he can use w and q in the place where yi shoudl apear in a second, and when he appears, he is stunned already.
The second thing is that, 3 seconds-long q is the thing i love mostly in master yi (it last long when u use it from long range). I can use q when my enemy is going to flash away over wall... and my champion follow him during q and appears already after flash. I love it. Mastering the art of q is thing i love on master yi, so riot please, don't break that. BETTER NERF RENGAR