Extraction/'Helldivers' mode?

Drop in an instanced map (White Night Gulch etc), complete objectives - main, side missions (like what are already on the map - define x location, destroy the outposts, kill x elite enemies, collect the orbs, find the hidden records, re-connect the power here etc), survive (or lose some loot), get out (extract).

Difficulty options, somewhat procedurally generated objectives/enemies etc.

The foundations are all there, no?