Do you guys smartcast? I tried it and I think it makes it a lot harder to land skillshots if you can't see the range indicator. Smite is better on smartcast though.
I prefer having normal cast as Q-R and smart cast on 1-4
it makes it easy to choose which I want
and if I play in the morning when I haven't eaten for ages... it makes it easier to hit a button that will do something as my hands are shaking an inch or two up and down violently from lack of energy.. great for akali