Yoda Is Your Father said:
Let’s put it this way: do you think Vader had “elite” troopers with him in ANH, when he is boarding the Tantive iv? They sure don’t look like it… And that could be considered as an equally important mission.
They all did as they were told and they all did what was expected of them. There wasn’t a stormtrooper on board who suddenly thought “naaaaah…I didn’t sign up for this!” and then helped Leia and the Droids escape.
What about that idiot who decided not to fire on the escape pod because it didn’t contain life signs? Were they trying to save ammo or something? In a world where artificially intelligent droids are commonplace… fire on the damn escape pod!
Droids aren’t allowed in escape pods. Even Threepio says so. 😉