Re: Federation duty/Common sense during the Destiny novels...*SPOILERS
There were seven thousand cubes. How on Earth could any weapon have taken out all of them? The very notion is absurd.
There were 7000 cubes AT THE BEGINNING,
Sci. In the end, between Dax's plan (which, at the very least, halved the borg forces) and the transphasic kills, there were 2500 cubes, at most.
Fair enough on my forgetting about the plan to have Hernandez imitate the Queen and half the Borg forces. But where on Earth do you get that 2,500 number? Half of 7,461 is about 3,730; there's no evidence that the transphasic torpedoes would have destroyed enough ships to bring the number down another 1,230.
Even if we assume that's true, though, the 90% figure for the thalaron weapons would leave hundreds of invulnerable cubes -- and that's assuming that the thalaron weapon
would kill 90% of the cubes, which I think is unrealistically optimistic.
Even if it had taken out 90% of all the cubes, that would have left 746 cubes -- and those 746 cubes would have been invulnerable to all the weapons that had already been tried, including the thalaron weapon. It would have just protracted the Borg's extermination campaign, not stopped it.
That would be 250 cubes. And these 250 cubes would eradicate all life in the alpha/beta quandrants a LOT slower than 2500 cubes.
Maybe, but they'd still be able to destroy the fabric of Federation, Klingon, and Romulan societies just as quickly -- destroy the key central planets, create enough chaos, and society and communications would break down. From there, they'd be able to proceed with exterminating everyone with relative ease.
It would have saved lives. It would have bought precious time for the alpha/beta species to come up with a plan (much like Dax's or the thalaron one) to destroy the rest of the borg armada.
That's still relying on a
lot of unrealistically optimistic assumptions -- that the thalaron weapon would work, that it would destroy the vast majority of cubes it was used on, and that the affected cubes would not continue functioning without their drones.
Take it up with 7 of 9. She said (in "Destiny") that the thalaron weapon will work and she knows more about the borg than any other non-assimilated being (several times in Voyager, she was said to possess the entire knowledge of the collective).
By the time of
Destiny, Seven of Nine has been separated from the Collective for seven years. Her knowledge is
woefully out of date by that point; she's more reliable than most, and certainly a valuable advisor, but this does not mean her knowledge is infallible.
And even Seven never gave any guarantees that the thalaron weapon would work.
Using the Thalaron weapon could have given the borg an even deadlier weapon?
The borg, as established, could already "cook" a planet to the mantle in minutes! What could the Thalaron weapon give to the borg - the ability to shave off a minute from the time needed to sterilize a planet?
No, but it would have given the Borg the ability to kill all crew members aboard Federation starships in a wide spread without needing to use any other weapons.
So, the thalaron weapon would give the borg the ability to destroy federation vessels, after minutes of charging (see Shinzon's ship - huge and constructed specifically to be a thalaron weapon) - and if the federates forget they have impulse drive (never mind warp).
More like, they'd hand the Borg a weapon that would deny Federation starships even the ability to distract the Borg from their target planets for a few minutes. It would actually
decrease the amount of time refugees would have to escape.
And, of course, after Erica Hernandez would show Starfleet how to modify their shields to resist thalaron radiation, the thalaron weapon would be useless against starfleet ships.
I have no memory of there being any indication whatsoever that Hernandez would have information on how to modify Starfleet shields to protect against thalaron weapons.
And you've already not explained what you'd do about cubes that continue functioning and continue exterminating worlds even with their drones killed. Remember,
Before Dishonor established quite firmly that a cube can function without its crew.