A Suggestion for the Pre-Season@Riot
A lot of players tend to look at the end game screen stats to see how they did; unfortunately, for many champions, it does not necessarily show the impact they had on the game. For example: Janna and Karma, there's no stat for damage shielded only damage healed, or even champions like Tristana and Zed, there's no stat for damage dealt to turrets. When players see that the work they put into that game is not represented, it appears to them and other players that they didn't do that much, when in reality, they are doing a lot more than the stats let on.
So my suggestion is to just add a stat for damage shielded and damage dealt to turrets.