First of all, I would like to specify I will only reply to constructive comments and not memes or angry comments.
Introduction
Despite loving the game I cannot see cosmoteer ever becoming a big or complex game due to the reasons I will list below. I will start with the general issues I have with the game and then I will move on to the more community-related parts. I do acknowledge some of these may be fixed
Singleplayer
As you all know cosmoteer has 2 game modes for single player Bounty Hunter and Creative, I will be covering the latter one first as it is the simpler game mode. In creative you build ships and fight them that is all, I find this game mode gets boring very fast and is overall, an unenjoyable experience I would have no quarrel with this but sadly the alternative is not much better. In bounty hunter mode you pick a ship and kill some other ships until you have enough money to be much stronger than everyone else and get bored, there is no storyline, purpose, reward, friendly ships, space empires, lore or any sense of immersion, all the things that make a good sci-fi game are lacking .
Multiplayer
In cosmoteer multiplayer, you can either join the one premade server or share your IP address to host a local game either than the IP sharing I have no problem with this as Walt has said there will be other servers, moving on.
Now for the community and other problems...
Forum
The forum is in disarray, mods that are already big continue to grow and new mods have their brief moment in the sun before disappearing into obscurity and often being abandoned. But as you probably guessed this was going to be in here then here you have it, roleplay while not being as prominent of an issue as before roleplay has really lost it's fun, there are like a billion factions now and roleplay has become "My faction is stronger because I say I have superweapons."
Moderators
This is my biggest issue with the forum. I will start by mentioning moderators who are actually good, IVIemories and yobeefjerky, however, some moderators prefer to move entire sections of the forum, work on their own mods or ban innocent people rather than actually moderate.
Unknown Rivals
My last point is that cosmoteer is not unique there are many games where you have a customised 2d spaceship and you battle other 2d spaceships, for example, Istrolid and Endless Sky both free steam games and this is, in my opinion, the big reason why cosmoteer will fail.