1. "Fishing Boats":
Neutral civilian vessels spawned through a density-dependent function salvage all kinds of ship debris, alleviating lag problems in the later phase.
Shooting stars and gamma ray bursts fired from random dummy objects beyond the map, constantly bringing unpredictable harzards to the space dwellers.
3. "Planetary Defense System":
All colonized planets are equipped with weapons to defend themselves, which are also upgradable according to different tech trees.
Difficulty: Beyond Extreme
Groups of rebels summoned randomly within the map, fighting all players around.
Difficulty: Unknown (at least High)
5. Advanced Alliance AI
Allied AI players will cooperate with the player by participating in the battle plan set by the player. The player will be able to designate a full spectrum of strategic requests at any given camera location, for example, "attack this point", "reinforce this stronghold", "investigate the combat zone", "assembly here", etc.
Difficulty: Extreme (the biggest problem is overwriting the existing AI behaviour)
6. Nuclear Radiation
A radiation cloud continues to do harm to the surrounding ships after a nuclear explosion. This can be done by spawning a dummy object that does spherical damage with a nebula appearance after a nuclear explosion. The dummy object will be despawned after a dummy subsystem's health is iteratively reduced to a threshold. As the health of the subsystem decreases, the damage multiplier also decreases. The duration and radius of the radiation remnant can be also upgraded, corresponding to a factorial of different dummy objects.
Difficulty: High (and it can be buggy)