3 factors why The Borg could be invincible if they assimilated Vulcans

The Borg collective is arguably Starfleet's most dangerous foe and arch-nemesis. Their technology to adapt to weapons, superior collective hive mind, and the ability to assimilate alien species into their collective to gain "perfection", are formidable. Most often, Starfleet has to outwit or resort to escaping The Borg to survive their attacks. What if The Borg were even more dangerous a threat to the Federation than usual?

In Star Trek canon there has only been one instance (movies and series) in which The Borg assimilated a Vulcan. It occurred in the two-part series event in Star Trek: Voyager (S6 E21, S7 E1 "Unimatrix Zero"). In this two-part episode, we learned that some Borg Drones have a mutant strain that allows them (while in their regen chambers) to mentally leave the collective for a lush utopia called "Unmatirix Zero".

In the Unimatrix, the Drones can live out their lives away from the collective, form individual relationships, and even fall in love. It was this vulnerability (with the help of Seven-of-Nine) that the Voyager crew decided to use to gain a tactical advantage against The Borg.

Along with Captain Janeway, Lt. Torres, and Commander Tuvok ( a Vulcan) boarded a Borg ship and allowed themselves to be assimilated. With a neural inhibitor, the Voyager crew were able to maintain their thoughts, long enough to infect the collective with a virus to wake up those Borg members with the mutant gene to incite a collective mutiny. Given his short stint as a Drone, The Borg were only able minimally take advantage of Tuvok's Vulcan traits - however, let's consider 3 tactical advantages The Borg would gain by assimilating an entire crew of Vulcans.

1. Enhanced Mental Prowess

Vulcans are an advanced race that has evolved over thousands of years and has reached a heightened state of mental acuity, logic and awareness. With the Vulcan capacity to suppress emotion over logic and reasoning, The Borg would gain a tremendous windfall of knowledge and strategy in a variety of topics and disciplines to vanquish their enemies.

Additionally, the hive gaining mind melding skills in the assimilation would certainly amplify and potentially speed up the collective hive's communication protocols. With these increased abilities, the Borg would likely also gain circumventing tactics to thwart countermeasures against resistance from potential drones. Additionally, a collective with the mental capacity to mind-meld or to evoke the Vulcan Katra (Star Trek III: The Search for Spock ) to project and transfer a Vulcan soul into another individual could be a new form of assimilation and further strengthen the collectives' hive bond.

To put Vulcan's mental prowess into perspective, we saw in Star Trek: Discovery (S1 E6 "Lethe') when Sarek (Spock's father, and Commander Michael Burnham's adoptive father) invoke his Katra. Sarek's Katra (soul) traveled across the galaxy to reach out to Burnham on a starship traveling at Warp speed to ask her for help. That's nothing less than astonishing! With these gained Vulcan mental abilities, The Borg's mantra of "resistance is futile" would undoubtedly become even more of a deadly cry across the galaxy.

2. Gain Strength and Stamina

Vulcans have been known to live long lifespans, often up to 200 years of age. Drones living longer would allow The Borg to be more efficient utilizing fewer resources to assimilate, with less of a need to replace assimilated species with much less of a lifespan than Vulcans. Vulcan longevity would be a clear advantage for The Borg in maintaining their drone crews across years of space travel, navigating space-time, and conquering species from one side of the galaxy to the other.

Vulcans have tremendous strength compared to most species and are often said to have three times the strength of humans. Vulcans are consummate combat tacticians who have mastered a variety of techniques to vanquish a foe in hand-to-hand combat. A crew of Drones with Vulcan strength, longevity, and tactical combat skills would allow them to board starship vessels and conquer their victims with efficient speed and minimal casualties.

However, there are times when Vulcan's strength is at an optimum. Mature Vulcan males experience a mating cycle, called Pon Farr, which occurs approximately every 7 years. During Pon Farr Vulcan's experience an extreme physical and emotional response due to their suppressed emotions which manifest in a primal need to find a mate.

This mating cycle is likely an evolutionary response to surviving and procreating in the harsh environment of the Vulcan home world. Vulcan's strength and combat prowess are extremely heightened during a Pon Farr cycle that is likely manifested by Vulcan hormones and brain chemistry. If The Borg collective could tap into the Vulcan hormones and brain chemistry that manifests Pon Farr to use as a battle strategy - that could make the collective an unstoppable destructive fighting force with Pon Farr-heightened Drones.

Vulcans seek out the most efficient and precise way to down an opponent while exerting the most amount of force. A precisely placed Vulcan nerve pinch is just the trick for such an occasion when a quick takedown is necessary. From a tactical standpoint, a crew of assimilated Vulcans, each with the strength of three humans and a few with the experience of a 100-year-old Vulcan drone - while armed with the collective's ability to adapt to phasers, could be an almost invincible combination. In this way, The Borg could continue to wreak havoc across the galaxy for centuries.

3. Technological Advancements

In Starfleet, Vulcans have succeeded in a variety of starship departments from Engineering, to Tactical, to Command and Sciences and more. Spock is arguably Starfleet's most brilliant Science Officer can in Star Trek canon he has engineered tremendous advances in technology. Notwithstanding, when he [Spock] re-engineered a stolen Klingon Warbird's warp engines to achieve speeds of Warp Factor 9.99 in Star Trek IV: The Voyage Home.

Vulcans have their own rigorous Science Academy that is arguably more difficult to graduate from than Starfleet Academy. As such, Vulcans are a race of highly innovative and technologically advanced civilization who achieve Warp technology thousands of years before humans and many other species across the galaxy.

A Borg collective with that kind of technical innovation within its ranks of drones would be an imposing menace that could dominate the galaxy. The Borg would gain technical advances in their adaptability, space travel, weapons, engineering, tactical strategies, and more.

One of the biggest advantages The Borg would gain is from assimilating Vulcans who have served in commissions on Federation starships. The Borg (in the "Unimatrix" episodes) were able to disable Discovery's shields by accessing Tuvok's (Tactical Officer) knowledge of the ship's security codes.

Tactically this could be devastating for any Federation starship engaging in a battle with The Borg. Despite assimilating a Vulcan Starfleet officer with knowledge or not of specific security codes - could unveil insights into basic Starfleet tactical protocols and procedures giving The Borg an incalculable advantage to potentially overwhelm the Federation.

On their own, due to assimilating a variety of species, The Borg is a deadly adversary for the Federation and any civilization or species that stands in their way of achieving perfection. Given their mental acuity and prowess, coupled with their lifespan longevity, superhuman strength, and advancements in technology, space travel, and engineering - assimilating Vulcans into The Borg collective would be a game-changing tactical advantage to which the Federation would certainly suffer a number of devastating defeats, and likely insurmountable setbacks.