As for their appearance, while there might be some peculiarities in design, based mostly upon the race's view of the relationship of form and design, I find it overkill (to put it in polite terms) for the design to represent the feature of the race as depicted in d20 Future Tech.

Drals might design ships that transform, without too much concern for aesthetics, but hapless/formless/bulbous design (as with the Dralasite destroyer) is not likely. No one would value shape more than a Dral who imitates and modifies shape. Every appendage would have a balanced and specific purpose to them and every ship would be shaped best for its function and unique from every other ship, not because they value uniqueness, but because they value purpose.

Vrusks designing ships that look like two-eyed bugs with wing casings is beyond the realm of believability. While a species that lives on a world of giant insects might be inclined to design the ship in the shape of a bug, the two-eyed look (Vrusk destroyer) would not be imitated. And Vrusk, being more logical, would seek to make the most efficient design, not giving the appearance of having cased wings when it has no wings. (As with the Vrusk starfighter.)

Yazirians designing ships that look like Yazirians (ala, the Yazirian destroyer) is also unlikely. While they might imitate a wing-flap design, (such as the Yazirian starfighter,) they are not likely going to form the entire ship in the shape of a flying Yazirian any more than a human would design a ship in the shape of a flying human or anything resembling a human.

Vrusk would value diplomatic vessels more than combat vessels. Thus, I think they would be inclined toward caravaning with diplomatic vessels and several small military escorts in tactical positions.

You may be correct about the Drals, particularly given their penchant for bad humor.

Applied to ship design, I think there would be a market to Yazirians for deadly personal transports of all manner of purpose based upon the vulnerabilities of their chosen life enemy. The ships of a squadron would be designed to attack a specific weakness in an enemy. While humans have something similar, Yazirians might be more pinpoint in this matter. The same goes for larger Yazirian capital ships.

Yazirians would also want ships that permit them to adapt and be cunning, because Yazirians aren't going to sacrifice their future to kill their life enemy in bold ways. They are going to get rid of their life enemy in a way that permits the Yazirian to escape detection. Thus, they would be very tactical, elusive, premetitated and surprisingly effective.

Their defenses would have to compensate, but again, be geared more to all-purpose efficiency. And regarding effeciency, weapons and defenses would only be active when necessary. Thus, they may have a tendency toward delayed actions at the start of combat, often being caught flat-footed so-to-speak.

The placement of their defenses and weapons would also be about energy efficiency and visual access rather than effectiveness.

But then again, maybe because of these tendencies, Vrusk would logically plug up the holes that cause them such vulnerabilities.

It was quickly made obsolete by ground defenses, at which time they tried it out in space against other ships to discover the cone effect at max range. It also had a pair of standard laser cannons with KH stats mounted in larger scale batteries, and a pair of 4 salvo rocket batteries. It was slow and clunky, but packing more HP than normally allotted (120, same as a modern battleship). The ship currently resides (decommissioned and disarmed) as part of the Star Fighter Corps sim-gun training grounds near Morgane's World.

Their post-UPF contribution is a scout carrier, a converted HS:6 freighter that ferries six fighter craft in its central bay. Sporting light hull armor and decent ADf & MR (stock 3/3 but 36HP instead of 30) and a single laser battery, it can quickly get a squadron of fighter craft to the scene more efficiently than the larger/slower assault carriers.

Alas, that's the extent of race-designed craft in my game...for the most part my game has a "universal design".

I always viewed them as more logical because of their LOG bonus. I always felt they loved beauty because they were logical. Beauty comes from mathematical precision. The less organized, the less symetrical, the less color coordinated, the less effective, then the less beautiful it is. Logic dictates beauty. Chaos dictates disorganization and is ugly.

People who truly love beauty also love peace and the environment and wish to spread beauty where they can, which would be at odds with the cut-throat bottom line of the modern US corporate mentality, which despises beauty for everything but its profitability and is thoroughly corrupt through and through.

The Vrusk description does not exactly paint them as fascist criminal technocrats.

Efficient design doesn't have to lack beauty. In fact, as machines become more efficient they also become more beautiful.

Vrusk ships should be beautiful, efficient, and deadly. If they were to protect their interest from another corporation of vrusk I can see them creating more efficient weapons to destroy each other, why waste ammo and energy. One beautiful beam to destroy your opponent and you have done it efficiently and defended yourself. It just occured to me, maybe the vrusk in their enlightenment from their past hive wars would find war not so desirable. Maybe they developed non-lethal ways to attack each other. The loser gets taken ove by the winners corporation. Maybe they developed ship weapons along a similar track. Non lethal to take over anothers ships. That seems more effecient and if the other ships are as beatiful as theirs, they would not want to destroy it either.

Then along come humans and yazirians who destroy each other and anyone else. So they have to adopt similar weapons to keep up with the neighbors. Just another line of thought. 

Now what about the Vrusk?  Maybe have them, as rather bulky beings, actually dislike fighters.  Instead adding light batteries to cope with attacks by lighter craft, and heavy cannon to focus on heavier targets.  Prefering energy based weaponry to minimize ammunition stowage and costs.  Focusing on larger ships to give them more potential knee and elbow room to work with and less worried about agility.

Now the dralasites are who I could see pushing the least lethal weaponry possible.  I would suspect the disruptor cannon is a dral creation.  Its mentioned how it can do a lot of electrical damage.  Perhaps knocking an enemy combatant out of the fight without having to completely destroy them.  Maybe focusing on batteries for the most targetting flexibility possible.  I wouldn't expect the dral to go to big with their ships either.  They want to avoid intimidating their enemies.

Finally I figure the humans are pretty much all over the map.  As at home in fighters as they are in battleships.