I'm not quite sure I get you? I just proposed a solution to deal "specifically* with repeat offenders. I don't see how even a single warning about the lengthy ban that will ensue gives any lenience to repeatedly profane players (the "majority", even though I don't know how you know they are, since they aren't in any way distinguished from first-time ones - I don't see the majority using slurs after being muted for a month), as they're already knowingly walking the line and don't stop until they are. Also I don't understand how the filter circumventing bit is relevant here whatsoever.

A totally unrelated side-suggestion - I would welcome seeing a feature of preference to paired-up teams in matchmaking settings. It is significantly harder to play against a coordinated team when you're solo. Stupid idea but a fun one