Mmk so I got more ideas WOW SO QUICK AM I RIGHT HAHAHAHAH
Nukes: Nuff said
Different types of blocks: Such as for armor sloped/wedged armour that can be rotate to make more slick ships.
Armor Pieces: I was thinking that you could even add different types of armour. Light Armor, Medium Armor, Heavy Armor, Composite Armor, Powered Armour etc...
Factions: Still unsure about this one.
Mining and trading: I think it would make the game a bit more interesting and less repetitive to have more ways or generating money. Like maybe mine out asteroids, or send convoys to trading guilds.
Missions: Maybe rather than killing them same single ships you might be given a mission to kill a trader convoy or stop a larger fleet for more rewards.. But ehh This idea isn't well thought out
Multiplayer: Would be cool, but idk how it would work haven't really got into the details.
Ship boarding: You could have things like security rooms, guards and boarding craft. So basically they just slam into the side of a ship or dock onto it. Then you release soldiers to kill the crew inside the enemy. So you would need to equip guards and soldiers to Attack/defend. Though this might not be implemented.
Drone Fighter Craft: Nuff said