I would like to propose a mission idea where we as rejects are sent to aid an assault being conducted be a regiment like the Moebian 53rd (because all of the Moebian 21st are gone) and assist in capturing the area. The level would be designed to help kill the enemies and move forward from sector to sector.
I am not saying that we need npc soldiers, but maybe an animation in the background from time to time showing the soldiers or tanks moving forward would be awesome. Everywhere we would hear the sound of explosions, shots fired, screams of loyalists and heretics fighting. When entering new sections of the battlefield, we would encounter enemies mere seconds (or minutes) after slaughtering the 53rd troops fighting them, seeing their corpses on the ground (to justify not having npcs helping us fight).
Maybe at some point we could also have a section similar to the sequence in one of the Vermintide 2 levels where we push a ramming vehicle. In this game it could be the Leman Russ battle tank. When close to it, the tank would move forward and enemies would constantly spawn to try and stop us with the ending sequence having the tank blow a hole in the wall for us to go through and breach the building and take other the area.
The ending could have us face an arch heretic. They could either be an established character or just another random Scab Capitan or Dreg Champion. But honestly maybe this level could be about bringing down the Moebian sixth once and for all or at least hitting them right where it hurts by finally bringing down their leader, Capitan Wolfer.
A new major narrative mission that progresses the story forward, or at least an entertaining operation with a war happening around, is something that I would really love to see in Darktide.
What do you think guys?