After playing Voidship: The Long Journey, I think there are 2 major features that Cosmoteer needs. First, an actual campaign. Voidship has randomized galaxies and events, as well as a plot and the ability to make decisions. Secondly, Voidship lets you take control of a ship and fly it with WASD. The feature is useless in large fleet battles, but it makes 1-on-1s a lot more fun. Cosmoteer has a much better ship design system (it's really awesome), but Voidship makes playing them a lot more enjoyable.