User blog comment:Der Schreiber/New Multiplayer "Species" and Enemies Idea : Mechs/@comment-1257357-20120612164722/@comment-5114262-20120612181043

I see what you're saying here, but keep in mind the Vorcha Sentinel has no biotic abilites, just tech, so biotics are not a requirement anymore for Sentinels at least. As for the Vanguard...well, I don't have anything for that.