just a quick shot on what I am on hobby wise. You may know Star Wars Armada - well a couple of friends just took that rulesystem and decided it is time to get some Warhammer Space Fleets going. So we decided the Base Sizes, researched some Models and ere we go:
Big Ships will be Star Destroyer of various Class types. The Little swarms will be Ties, Interceptors, Bomber etc. We plan to develop rules and card availability for all 40K races.
Big Ships among Squadrons will be special characters like Howlrunner or Vader.
Magnetic Cubes will be painted black and will be added with numbers to show Shield values. if you know 5mm D6 which are magnetic - let me know :D