Vacuum should be the most killing cause in a spaceship battle. I mean, you're dodging HE shells that will cause Hull breaches which causes vacuum to flood the areas where your crew are, causing them either to implode, suffocate, or get sucked out and frozen to death. Horrible fates
Not to be nitpicky, but loss of hull integrity in a vacuum would cause an explosion, not an implosion. Implosion only happens when the outside pressure is greater than the pressure inside the container. In other words, an implosion can only occur in an atmosphere.
And to be nitpicky, vacuum doesn't 'flood an area.' To say something 'floods an area' implies something is flowing into it, but when a hull breach creates a vacuum, the opposite is happening; all the air is flowing out of the ship. But since this part is nitpicky, feel free to ignore me.
Also, since I'm not terribly familiar with the lore, is it conceivable that ships would be outfitted with things like emergency forcefields that seal small-ish hull breaches (like in star trek)? It might help to explain why there are fewer deaths due to hull breaches than you might otherwise expect.