User blog comment:Dragonzzilla/ME3 Multiplayer DLC I Ideas/@comment-4967682-20120430002056

What I really want is DLC that adds the Collectors as an enemy faction. It's canon that they still exist, and they were planned to be included in multiplayer as one point, so why not? Plus, with a few modifications, their troops varieties fit perfectly with the existing system:

Grunt: Drone (G version: Trooper. C version: Assault Trooper. R version: Marauder) Elite: Guardian (G version: Rocket Trooper. C version: Centurion. R version: Marauder) Special Light: Assassin (G version: Hunter. C version: Nemesis. R version: Husk) Special Heavy: Scion (G version: Pyro. C version: Guardians / Turrets. R version: Ravager) Sub-boss: Biotic Specialist, Harbinger stand-in (G version: None. C version: Phantom. R version: Brute) Boss: Praetorian (G version: Prime. C version: Atlas. R version: Banshee) Random: Abomination (G version: Turret drones and missile drones. C version: Engineers. R version: Swarmers)

Now they'd need to modify the Assassins and Drones to make them more varied and capable (like how normal troopers can throw grenades now) and maybe give the Harbinger unit a buff and some extra capabilities, but overall I think it'd work out well. Plus, fighting the same three factions over and over again is getting boring.