I've only played Beta 3 with the only faction available being the normal "trade humans"
1) Dont like that the weapons on the frigates, capital ships dont aim at the enemy target before firing. On the Marza Dreadnaught the ship fires an enemy broadside while all its weapons are up on the dead front of the ship.
2) Add some simple animation. When a cannon fires, animate it being pushed back by the force of the projectile it just fired. Its easy stuff.
3) Nice blenders and shadows, but not very realistic ones. Homeworld 2 had the best shadow system I've ever seen, not that overally was better, but it was more interactive with its enviroment.
4) Make the suns be more bright up close. It looks like a liquidy huge ball as it is right now.
5) Fighters go through solid ship hulls when docking or launching. Why dont they use the ship docking bays.
6)Planets seem to have lights on the dark side whether they are populated or not. Shoulnt planets be dark completely when nobody lives in them?
7)The team should have found a way to make planetary influence lines extend to other solar systems. It reduces the fun when you can use this ability when playing in a multiple solar system game.
8)Cobalt light frigate weapons fire sucks so bad. I know its not meant to be a powerful vessel, its weapons fire is very dull. No bloom no nothing. More eye candy please.
Thats it I guess. I will post again if I find something.
Other than that love the game cant wait to play it in full.