Add some explanations to a character's recommended items.
So, I noticed that a lot of people will just build the first 6 items in the Recommended category without thinking whether or not they actually need those items. So I'm suggesting that Riot adds some text or something that would be like "Elise should get a Rylai's because she wants to be tanky, and it's slow helps her assassinate her targets." or "Twitch should get Youmu's to combine it with his ultimate for a huge boost in damage."
It doesn't really need to be character specific either, like the Rylai's example could just be "Champions who scale with Ability Power and require some bulk should buy this item.". I think stuff like this would help newer players or people who are trying to get into new champs and don't know what to build on them. I suppose guides kind of already outline why a character would or wouldn't want an item, but I think having a little bit of text in the game for a quick, basic explanation wouldn't hurt.
I'm having trouble wording this so hopefully it makes some sense.