I made a game that uses microscale lego spaceships. It's pretty simple, don't be afraid of the rules (they're only 10 pages printed). I've played it only a few times and it works well. Occasionally I will edit the rules, but doing that does not change the URL.
You can see my rules here
As for ship ideas, I made a fleet
, and you can see the original inspiration here
I hope you enjoy it.