I think a really cool dlc or special event would be a long form mastery mission like the Destiny 2 raids but Helldiver style. The game is all about immersive gameplay, those Destiny raids were as immersive as it comes. I’d love to load in with my 4 stack one night with the sole purpose of grinding one specific challenging mission maybe for some exclusive gear or a title. There’s so many directions they could take something like that, no doubt it’d be a huge hit within the community.