Different "brackets" for styles of chat?

So way back when, when I first created my Xbox Live account, I remember it asked me what "zone" I wanted to be in. This determined the type of players I would be grouped with usually. The options were like "Family" or "Hardcore" and "Underground".

Hardcore was for people who just wanted to win, family was for casual, and underground was for people who wanted to cuss, troll, etc.

Why not have something similar for League? If you elect to go "Underground" you can talk as much shit as you want, without being reported or banned, because you're grouped with similar minded people. Obviously intentional feeding and such should be moderated, but saying "gg ez" at the end of a game would no longer be grounds for punishment, specifically for these players. Would also separate them from more "Casual" players.

Any thoughts?

TL;DL- Create different "zones" for players of different attitudes to reduce bans.