Extra Communication
Everyone knows that when someone is acting questionable in a match their excuse is almost always "lag". It has gotten to the point that if you truly are lagging you will just be called bad at the game. I feel like a good way to combat this is a way to show proof that you are lagging. I believe that you should be able to ALT + Click on your ping, so that you can show your teammates what it is. This could be a way to warn your team instead of trying to make them believe you.
Please note that this feature would only show the latency between your computer and the League of Legends server. This would not show brain lag