[2019] Is sword-lining actually bannable?

In general, behavior that is intended to bypass game systems, rules, and/or creates a negative experience for other unwilling players is not behavior we condone in the game. Collaborating to trade kills is much harder to track and isn't something we're pursuing as aggressively as the rampant AFK XP farming epidemic we've seen. Often times it's a mutually agreed upon thing with no real 'victims.' In many cases, the bannable part of 'sword-lining' comes when someone declines to opt-in and then is barraged with threats, insults and offensive language (voice and/or text) and/or repeatedly betrayed and griefed, which then violates the code of conduct.