The normal missions in this game would be trivialized, and the new missions would be piss easy, if ever a single fucking Helldiver team actually worked together.
>pick up EATs and help quickly eliminate a dragonroach or really any heavy
>enter tunnels all at the same time and actually fucking stick together
>bring mechs for cave missions and once again fucking coordinate the call ins and stick together
>split up and retreat in different directions when objective is too hot, wait for heat to die down, and try again as a group
>set up and hold extract and not expecting it to be a cakewalk
>during any situation where there's 2 directions of attack, actually split focus 2 one way 2 the other
>specialize loadouts based on the mission type and each team member takes something that will make an aspect of it trivial or easier
>team reloading, need I say more
>use a dead teammates weapons if they die and you're in a pinch
>literally just fucking work together and communicate
The few times I have had teams like this, missions go like butter without a fucking hitch.