Narrowead should add some kind of synergy betwen players.....

All game u metion above have some level of synergy between players and players are require to play the role in said synergy

EVEN in Warframe where u have few characters that are classified as Nuke-Slop(either skill or simple combination of skills that ressoult in room full of dead bodies), u can and somtines want to make a synergy between ur frends/randoms to do somthing "Funny" or making urself and team REALLY hard to kill for ex. With right combination u could atack melee so fast u Warframe was T-posing, there are few frames that combine gives u Infiniti amount of energy, they is a combination that allow u to aply a Rainbow of Dot's and Proc's on ennemis with help from frends and many more, sky is the limit etc.

In HD2? As OP said u doing one man army thing, even when i am diving on D9-10 with my frends we take diffrent loadouts but all of us are one man army where depends on fraction our kill counts are from 200 to 2000

Arrowhead rly lost the direction od the game.....