Guy Gardener wrote:
Purging the galaxy would have taken millions of years.
Spending three years wiping out the Borg and then going home for a breather that might just last forever, there is no conceivable reason for anyone in the Alpha Quadrant to follow them back into fluidic space to find out if 8472 is coming back to finish off the job.
The least 8472 could do and still call it a victory was destroy the Borg, and the Borg's allies.
Besides, after they killed Janeway, it really doesn't matter what they said to Janeway, and since they WERE going to kill her, it already didn't matter what they said to her as they said it.
I mean it's not like Enterprise was made of Cobinite or Voyager had a Photonic cannon, but wasn't it hilarious when the Klingon's didn't think they were stupid enough to fall for the same bluff which the Cardassians had 4 years earlier that DS9 had secretly been transformed into a death dealing gun platform.
The thing is if they hadn't been giving malevolent thoughts, Voyager wouldn't have helped the Borg and that weapon never would have been developed. So who were they trying to fake out? Again I don't think these scare tactics would work against the Borg, they don't have telepathic powers and are generally not effected by emotions like fear. Besides why would the Borg care if Species 8472 are genocidal psychopaths or not? Species 8472 would be at war with the war if they were extreme social Darwinists or just want to be left alone, because of the incursions the Borg made into their realm. The Borg collective doesn't care about non Borg races, so pretending to be pure evil and genocidal wouldn't effect them, one way or the other.
And really pretending to be genocidal social Darwinists seems like overkill. Their raw power already gives non Borg races plenty of reason not to mess with them, but spreading the idea that they want to kill every single being in the galaxy, gives other races a reason to challenging them, reducing the chance they will be left alone.