Something I REALLY wish it existed in League of Legends

A new window that can be opened in-game, which shows your champion's abilities.

I understand this might look like a pointless feature, but hear me out:

1-It can help you to know your champion's abilities stats at all ranks. Currently the tooltip of the ability shows its stats and cooldown at rank 1 if you haven't learned it, or or you can view the next rank only of the ability if you alreade added it.

2-It can help you know what is the scaling on your abilities. It will make it easier to understand the best way you'd be building when playing an unfamiliar champion.

3-You can adjust some of your champion's abilities to smart cast and keep it on the champion forever. So if you are playing with champions that necessarily need smart casting on their abilities (kata, lb, yasuo, etc), you can just keep these abilities as smart cast instead of having to change them at every game.

For the first 2 points, I clearly know that you can get those kind of information by going into a third party website. But it is always better and easier to have these in the game.