The things I feel are needed in game 

1. a counter for carriers, carriers are the best ship in game hands down, due to the fact that the snipers they deploy are generated at your highest level of laser offense/deffense so they are upgradeable in the feild. This makes them the most valueable ship you can have in your fleet. 

2. Troop Transport destinations, it get rather confusing in battle and it would be nice if everytime I clicked on a troop transport I seen where all my transports where going, invasions would be better stramlined and you wouldnt be sending troops to places they are not needed

3. Portals, much like your opening seen where the terran fleets warps in to attack, this would almost counter carriers, but it would be nice to have that fancy new destroyer teleported right into the heat of battle

4. Blockades, just like how Earth has a blockade around it in the opening scenimatic as of now you can setup manual blockades, but it would be more streamlined if it was a command you could give to the fleets

5. minefeilds. would be a nice feature to setup mines, and who doesnt want to watch the Yor walk into a minefield?

6. more minerals, I like to mine what can I say

7. planet invasions, Im pretty sure this is just because of GC3 being in beta, but i really enjoyed GC2 planet invasion cut seen. maybe a live action invasion, if you guys wanted to get fancy. A live action invasion would be super cool

8. booting people out of the United Planets, would be fun to do and because I am D.L. Cooper the king of the galaxy.

9. a Propaganda ship, one that let a planet know when your troops are coming to kick there teeth in

If anyone has anything to add please leave a comment

Also I haven't watched beta 5 vid yet so please do be to harsh if they already addressed some issues with balance