Yeah, the game that I was making these for was a typical collect the cargo, trade the cargo, buy the upgrades space opera. All of the early ships were meant to be very much cargo haulers.
Later ships were intended to add more complexity and militaristic capabilities, but most retained the basic hauler design at their core.
As for the wings, good point, but popular culture has put wings on spaceships, most SciFi flicks still puts wings on their smaller ships, I like wings, and if I didn't stick wings on the little ones, they would look like little shiny tubes... If I posted a cylinder titled "Spaceship 1", I'm pretty sure there would be a post or two asking why there were no wings or what brand of crack I'm smoking these days. LOL
I know that in space, there is no need for tail fins, stabalizers or flaps. Still, doesn't hurt when trtying to present a vehicle of flight. Windows aren't a necessity, but they make the ships more interesting, at least to me, and especially when the player boards one of the larger vessels and looks out.
Remember, in space, no one can hear you cuss, swear, and plot your revenge...
Mark