Maybe a smart cast toggle could be held to make it walk you into range to cast it there, though to be honest the number of times I have used it to wall off areas successfully just with max range smart casting has actually improved with the change already. Also, The change has assisted in landing many more walls on enemies I was chasing as well. They may be increasing the cast range on it slightly as well, which I am hopeful is the case, because missing what feels like should be a garunteed wall on an enemy due to range being just slightly too short feels absolutely terrible.