He should be suspended for the entirety of next season.
From the article:
Suh served a two-game suspension in 2011 after he stomped on the arm of then-Packers offensive lineman Evan Dietrich-Smith. One year later, Suh was fined $30,000 by the NFL for kicking then-Texans quarterback Matt Schaub in the groin. Since 2010, the behemoth has been fined seven times for player-safety violations.
It is clear that is NOT going to change his behavior. Therefore, he should be banned from playing in the NFL for life.