User blog comment:Ramallah/Mass Effect 3 details revealed/@comment-93.102.146.177-20110414105711/@comment-1726879-20110414191951

In my experience in games, the scarier the enemies, the more fun it is to fight them. Unpredictability is the spice in all games, that's why the utterly mad characters in stories are usually the most liked ones.

Plus, it gives vanguards a reason to keep their shotguns.