Grando
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Why suddenly is it necessary to clean this up? The entire discussion is on topic.
The more players realize what unique characters are in the lobby, the better.
And the sooner the blacklist buttons are pressed and, especially, reports are sent to HotA Universe for obvious leavers, the better.
Because, as you can see, one such "unique" player can ruin around 300-400 games for different players on their own, and waves of negativity will spread throughout the community for a long time.
"Cleaning up the trash" means removing the pressure that you hope will change someone (and you are right - the only hope is in this pressure).