She's also a very easy jungle carry to shut down, the reason she has her kiting tools is it is exactly what she is about, kiting and keeping that "pole" between you and you opponent, if you Q forward and your in range you WILL be blown up, if you can kite around the fight its powerfull but then same can be said for graves, vayne and Lucian oh and kalista, even Kha once he starts re-setting and his isolation buff in the jungle/back line.
If q scaled with attack speed I'd be op by 20mins I usually have blood razor, hurricane and cleaver by then, sounds like a buff to me.
Disclaimer
Level 7, 88% win rate in ranked