Encouraging suicide should always be an INSTANT ban
There is no excuse for a player to have any leniency after they tell a player "kys" or "kill yourself".
That should, always, no matter what, be an instant 2-week ban.
None of this "players who say this are usually caught eventually with other, more frequent toxic behaviors" bullshit.
No excuses. As soon as it happens, ban them.
Riot, you want your playerbase to take your Player Behavior and Moderation systems seriously, but you don't have zero tolerance policies for these kinds of messages and behaviors.
As of right now, encouraging suicide is not an instant ban, and that shows Riot does NOT have a zero tolerance policy regarding it.
Shameful.