Was Kassian suspension severe enough?

Helmets off to OHL commish David Branch.
The big guy continues to lead the way when it comes to dealing severely with headhunters and players who would take advantage of opponents in vulnerable situations and for no other reason than to "finish the check."
The latest example is the 20-game suspension slapped on Windsor forward Zach Kassian for his idiotic headshot on Matt Kennedy of the Barrie Colts. Kennedy was both in a vulnerable position and was not in possession of the puck when Kassian, leading with his elbow and leaving his skates, knocked him into next week.
There was a time when the OHL was one bench-clearing brawl after another. In other words, a lot of fun.
Nobody got hurt but the league was becoming a gong show and Branch knew it had to end.
So, he introduced rules and punishment to fit the crimes and today, even a line brawl is a rarity. At least in the Eastern Conference.
Now, Branch is showing the same determination to rid the league of headhunting.
However, was 20 games enough for Kassian?
It would appear Branch set the bar when he booted Michael Liambis out of the league for the entire season after he slammed Ben Fanelli into the backboards with a needless hit from behind that resulted in a fractured skull for Fanelli.
Did Kassian deserve the same punishment?
Probably.
Hits to the head are cowardly. They are in most cases premeditated, no matter what the instigator tells you. They are meant to injure. They have no place in hockey.
I admire a terrific, bone-crunching, open-ice bodycheck as much as a nifty breakaway goal. And, sadly, we see less of the former than we'd like.
But, please, do not attempt to defend the headhunters.
If you have your head down, with the puck, you almost deserve to get hit.
That said, the hit should be with the shoulder -- not the elbow.
Branch's critics will suggest Kassian's star status saved him from banishment for the rest of the season.
Hard to disagree with that.