Riot, these forums need a Rage Support Group.
I've seen a lot of threads and posts lately by players expressing frustration over a game they had, or a punishment they received, etc. Some of these have been on other threads, especially in Gameplay and Balance, and to be honest, they kinda clutter it.
That said, I think it really does help some people to vent on the forums. Sometimes a sympathetic ear can help relieve rage, rather than bottle it up. This is especially important for people on chat restrictions. If your goal is to reform their behavior, it'd be helpful to have a way to talk about chat-restricted matches, just to get it out there so the restricted player doesn't have to deal with it. As a result, they'd be less likely to rage when their restriction is up.
I know this could become a veritable cesspool of angst for outside players, but I think there are members of your community that need it.