I was wondering if these following things could be added to GC
1:Guns
Guns, guns make everything better, so why not make an already good mod even better by adding guns?
What guns might you say? Well I would say a M41A Pulserifle would really make my day. BTW if you don't know what the M41A Pulserifle, it's the assault rifle from the 1986 Movie Aliens. In order to make the Pulserifle, you have to aqquire a Blueprint from a chest from killing one of the bosses and as for the crafting recipe I'm not to sure about that yet.
2:More Aliens
Personally I think Evolved Mobs are cool and all, but I think there needs to be more innovation in the mobs. Some ideas are 
A.Xenomorphs from the Alien Quadriligy(Along with the Queen as a boss fight) 
BMartians(Just don't do the generic green dude stuff)
C:Predators!(Because the Universe doesn't hate us enough)
D:Your own idea! Post it below!
3:Fictonal Planets
Now I know you to add every planet from the soloar system into GC, but why not some ficonial planets from Novels, Comics, Video Games or Movies?
Examples
A:LV-426 from Alien/Aliens
B:Endor or Tationne from Star Wars
C:Polyphemus from Avatar
D:Your own idea! Post below!
4:More Armour's
Persoanally I feel like the Armour's in GC feel a bit bland and generic, I think that there should be some more intersting Armours.
A:United States Colonial Marines Armour from Aliens
B:Futuristic Space Armour
C:Alien Armour
Along with the new armour I think we should be able to also have your own Space Team Flag on the Armour itself just to make even more cooler.
5:Cities 
The Planet Villiages are cool in all, but after playing Destiny, I really am wondering if it could be possible to put Cities in the planets, I mean it enhance the Open World aspect of Galacticraft!
If you have any other ideas, Post Below!