Idea to add npc enemies, they can be static (abadoned base) or move on routes between planets. Visually it can be abadoned stations, or "AI" controlled enemies. Actually they don't need to be actually maneuring during fight, just start to attack player on some range + extra range if player trying to escape,. Also damage model can be simplified for perfomance requirements (no need to force server actually calculate damage to modules) just calculate damage to CCS, and destroy modules(random ones