^^ Yeah, with a race like the Borg you're kind of in a tight spot. They can't be too powerful for the heroes to defeat (or at least survive), but if they're largely an unseen force then they also lose some of that ability to inspire fear.
Sometimes I think StarCraft handled it very well with the Zerg, who are similar in some respects to the Borg and definitely have the same potential to cause immense destruction. In StarCraft, they did exactly that - the Terran and Protoss forces won some victories against them, but even with the loss of the Overmind (the Zerg equivalent of the Queen), they're still a power to be reckoned with. The Brood War expansion ended with the Zerg winning a major military victory against both races, so it's not clear yet what the next step might be.
Sometimes I think StarCraft handled it very well with the Zerg, who are similar in some respects to the Borg and definitely have the same potential to cause immense destruction. In StarCraft, they did exactly that - the Terran and Protoss forces won some victories against them, but even with the loss of the Overmind (the Zerg equivalent of the Queen), they're still a power to be reckoned with. The Brood War expansion ended with the Zerg winning a major military victory against both races, so it's not clear yet what the next step might be.
