What is the Optimal Way to Report M+ Leavers Under the New Policy?

[Perl-anetheron (Perl)]

@Vailnite-kelthuzad

so I assume there is a way to report these people specifically for this action

There is not. Nor was it necessary in order for Blizz to take action the other week. Blizzard is watching for patterns, so you don’t have to worry about reporting it.