User blog comment:Lilxtiger/Ashe - Rework/@comment-10428734-20141029130550

Problem with your Q is that it is basically a copy of her R with less range and less CC (tooltip states "snaring the first enemy hit", so it is a linear collision skillshot, right?). You don't want the same ability twice in the same kit. Imagine if Amumu W was Lissandra W (i.e. a mini-Amumu R). It would feel like casting the same skill twice. Furthermore, landing one inevitably makes the other unavoidable (much more counterplay than a permaslow, right?).

Before you ask, LeBlanc R is not the same because she has to choose which ability to copy (unique mechanic and core identity of the champion).

Having identical skillshot paradigms on a same champion is not really good. Usually you want to alternate between linear collision, linear pass-through, ground-targeted... In fact (correct me if I'm wrong), the only champions who have 2 skillshots of the same type are LeBlanc (explained above) and Ezreal (W and R). But those abilities have no CC (landing one does not guarantee the other).

There is nothing wrong with a RANGED permaslow. Melee permaslow is problematic because it becomes totally useless when behind.