The Helldivers 2 community wants Arrowhead Game Studios to add this one feature that would make the co-op experience much more immersive.

Helldivers 2's popularity increased when Arrowhead Game Studios asked players to not play the game because the servers couldn't handle it.

As for why it's such an obvious pick, well, Helldivers 2 and 40k occupy a lot of the same 'satire of intergalactic fascism' ...

It could just be the divers getting the heebie-jeebies, but it looks like Arrowhead could be teasing the squids doing a thing.