Coop with other player/s on main map

[kOOsmaty]

Is this possible to add coop type of game when during friend/s can play on singleplayer map? It would be awesome!
BTW I heard that TW got plans in the past to add that kind of gameplay.
Hope this idea could be happend

 

[stevehoos]

This game at its current I'd say there's a 0 percent chance that ever happens.

 

[Butter_Lord]

This will not happen. Soon or probably ever.