[Request] Smartcast Toggle key binding

I've been playing a lot with characters that need quick reactions and more often than not require the use of smartcasting, and also champions that require you to use selfcast, while selfcast is great and easy to use i find myself having trouble swapping between using and not using smartcast, and not being able to accurately judge the skill range/distance when using only smartcast (own over 60 champions and i like to aram a lot).

So i had this idea, if shooting games have the option to use key bindings to toggle actions on and off such as running and crouching etc, why not League of Legends? I think LoL would benefit from extra key bindings to toggle smartcast etc