Allow Tribunal to See Post Game Chat
The Tribunal, if it really wants to do its job effectively needs to be able to see the post game chat. A LOT of players simply wait until the game ends to do their trash talking. And while you can mute them, or just leave... that's not really as good a solution as it sounds. Maybe you want to tell your team that they did awesome, or give kudos to the enemy you faced in lane. You should be able to do that without having to go through the abuse of toxic players. Yes, you can ignore them. But if you had no idea they are going to be toxic, and they start talking crap as soon as you get into the lobby, it's kind of already done. You can mute them, but that doesn't erase what they've said or fix their attitude. They display this sort of behavior so vehemently in post game chat because they know it can't be seen by the tribunal and there is effectively no way for them to be punished. Let me make this clear, I know that I will never see them in another game most likely, especially if I ignore them, but that doesn't prevent them from displaying this kind of behavior to other players.
tl;dr: Tribunal needs to see post game chat to effectively carry out it's job. Yes, I know I can mute and that I most likely won't ever see players like that again, but doing that doesn't prevent them from acting like that towards the rest of the community.