In the current version of the ship designer you can stretch parts in every direction but you cannot enlarge or contract only one side of an object.
For example: if you have a cylinder and want to make it into a cone, you can collapse one side of the cylinder until it is only one pixel in size and you would get a perfect cone. Can this feature be implemented in the designer, maybe under the "advanced" options? Or would it not work with the texture's current bahviour?
This would open up many more options when designing your ships.