User blog comment:GodzillaMaster/Truly Extinct?/@comment-1221773-20111118214259/@comment-3228423-20111120142703

Okay, you have a point about them being able to take all the time they want. But the point is that the communications would still work, unlike before, meaning that the news on their arrival and any battles would spread, allowing the races of the galaxy to be able to form a counter attack. Even if it were to fail, it would still cost the Reapers a number of ships, and you said it yourself that they believe themselves to be the superior race, meaning that they'd hate to lose any ship. Which is why the Reapers would want to have minions(whether they be Collector or Cerberus) to be their meat shields.