The idea behind the game has huge potential to be more than what it currently is.
These are the type of things I feel would improve the game
- Some of the discovered outposts protected by alien mobs
- Inventory increase
- all items able to be stacked
- land crafts like a buggy or boat to get around
- Space station limited storage
- portals that actually work properly - I'm sure they are working on it
- the npcs you interact with actually move around and do stuff
- a way warp back to places visited
There are I'm sure heaps more that can be added, I'll leave that to you
Now as for multi play I would say noway as it would just bring all the trash talk into the game itself instead of on the public forums.