I know this is a topic that has been discussed to death, but one thing that really ticks me off is that when the Collectors board the Normandy they do it when our crew is out its most vulnerable. From a tactical perspective, this is cowardice. From a story-telling perspective, this is a lot easier than showing the dirty dozen fighting off the collectors. because god knows that if they tried that when my squad is on board they would have gotten pushed back and the story would be dramatically different.
indirectly, the reapers are cowards too since it is they who control the actions of the collectors. which is pretty contradictory to the idea that the Reapers are a pinnacle of power and know no rivals. so now they are using guerilla tactics?
so reapers and collectors are sissies and are afraid to fight SHEP and his squad. They are not afraid of engineer gabby