User blog comment:Diyartifact/Shepard's adversaries/@comment-3228423-20120404115742/@comment-1388547-20120404150439

I kind of liked it, actually. It kept the Collectors scary. You only encountered them on major plot missions, and they were always more dangerous than the garden-variety mercs you fought normally. (Except in the Collector base, which I found to be a bit of an anticlimax, even on Insanity. There should have at least been a more challenging optional mission aboard the base, or a dynamic difficulty setting that would spawn more collectors if you're doing well.)