Before I say anything I just want to say that I am an undergraduate student in aerospace engineering
Military design most certainly does take aesthetics into consideration, for two reasons. One, the contractor who is developing this weapon has to sell military brass on throwing down some budget money on their creation; military pragmatism notwithstanding, it is easier to sell someone on something that looks as if it will accomplish the task. This means you design a vehicle/weapon what have you with this aforementioned standard in mind; a boat should look like a boat, a jeep a jeep, a rifle a rifle, and so-on. Secondarily, one must consider the psychological impact of seeing this weapon. You don't paint a tank pink and cover it with flowers. You want your enemy to see this thing and quake in fear with unbidden thoughts of impending dismemberment.These sorts of things are seen most often in infantry equipment (That marine corps K-bar looks menacing for a reason), but it most definitely extends to vehicles design considerations as well.The history of design, and of military design especially, shows us that aestheticism takes the most primary role when form effects function the least. So, it would seem evident that spacecraft are most definitely going to be designed with aesthetic concepts in mind.Anyone who mentions convex curves on a space craft as being useless fluff is incredibly wrong. From a design standpoint, anything that reduces angles limits the amount of surface material needed to enclose a given 3-dimensional space.
As a soon to be engineer in the defence bussines i can assure you that aesthetics comes to the bottom of the list when it comes to designing weapon systems, the so called "psychological impact" does not exist since trained soldiers don't fear weapon systems, they fear from the
effectiveness of said weapon system and from the enemy (if the enemy is good enough).
Take the example of the recent Joint Strike Fighter program that's currently in course to put the new F-35 Lightning 2 stealth fighter into full service by 2012. The two finalists for the contract were Boeing and Lockheed Martin. Boeing had designed the X-32, a hideous bulbous contraption that's probably the ugliest war plane to be designed since the beginning of air war. Lockheed had designed the X-35, a normal curvaceous stealth fighter that, while not looking extremely threatening or anything, looked decent with appearance somewhat similar to the larger F-22 and the old F-16.
Boeing lost. Lockheed took the contract, and the big money that came attached to it. I'm sure looks had some part to play in that, though not all.
The X-32 lost because when it hovered near to the ground hot air from the exhaust circulated back to the main engine, which causes the thrust to weaken and the engine to overheat, thus making it riskier to land and takeoff in VTOL mod, tht was the major consideration in picking the X-35 over the X-32.
Anyone who mentions convex curves on a space craft as being useless fluff is incredibly wrong. From a design standpoint, anything that reduces angles limits the amount of surface material needed to enclose a given 3-dimensional space. Additionally, convexly curved surfaces provide a greater degree of protection against weapons fire, and a modular, curved superstructure would provide the most protection against decompression. Basically, anybody who designs a blocky spacecraft is either in a hurry, or an idiot. Lets give the TEC the benefit of the doubt and assume that their ships are blocky and angular because their production technology made producing large flat slabs of metal incalculably cheaper and faster than curvy ones.
You are making alot of assumptions based on (IMHO) on fanciful thinking, now don't get me wrong, fanciful thinking is all you can use when thinking about spaceships in the far future OTOH assume is making an ass out of u and me, so lets not get into the fight of how will spaceships look in the distance future since most probably each and every one of us will be wrong...
OTGH (on the gripping hand) we can look at existing space craft and technologies to picture the spacecrafts of the close future like this one:

Technological levels required to effectively bridge the gap between the stars are hundreds, if not thousands of times higher than what we have now, and we already have the ability to incinerate our entire civilization. Take a look at our world. With all our greedy politicians, religious nutcases, ideological fundamentalists etc willing to kill and be killed over their ideas and issues. Imagine how likely our survival would be if we had, say, the technology available in Sins. One nutcase with a spaceship and a cargohold of iron lumps the size of cars could do a LOT of damage to a planet. And that's not high-tech at all. Imagine simple nukes being thrown about, or to get more advanced, fusion bombs (which can theoretically get far, far more powerful than any fission device.)
Technological levels required to effectivly rule an entire continent are hundreds, if not thouusands of times higher than what we had 1000 years ago and yet even though we do have the ability to incinerate our entire civilization we still fight each other like they fought 1000, 2000 and even 5000 years ago.
Technology is not magic, there is no threshold that if you pass it people will magically become enlighted ,peaceloving and benevolent, technology is a tool to do things more efficently thats all.
Anyway... how we treat ourselves reflects how we treat others. You cannot have a harmonious and peaceful society which is at the same time aggressive to the outsiders. If you disagree, find me one historical example of such a society.
It is simple, unavoidable, mathematical logic that the more powerful a species is, the more responsible *individual* members of that species have to be.
I'd like to see an harmonious and peaceful society that survived to this very day...
and i'll sure like to take a look at your math...
As for space weapons and other niffty stuff....
Take a look in here (since I have a test tommorow and I need to go study):
WWW Link and go to the space war section.
Hiem's extended theory (theory of everything):
Space flight and tak a look here for further articals:
HPCC-Space GmbHAnd, if you really want to know how space combat with close to today technology might be, tryout
Attack Vector TacticalWarder