Custom / Co-op vs AI extension

Okay after seeing Doombot videos time after time after time, i think it would be about time the Doombot Difficulties should be added to both Custom and Co-op vs. AI game modes. Yes i know its a special event and all but lets get real on it, its the only event type of gamemode that wouldnt get boring in Custom/Co-op vs. AI since it adds up a difficulty spike and it would be fun to play with friends.

If this couldnt happen, i just hope we see the Doombots again in the future.