When in combat and you have removed all ships, spacestations etc. You should skip out of combat mode and just be able to bombard, leave, retreat or invade planet.
What I really like is your techtree I like the description telling what you can get if you research a certain item/area. It is nice to be kept in the dark what you get when you research, so you don't go for for military straight away.
One of you big hurdles I can see is diplomacy. Only two options either pay or go to war, I guess you have something more in the pipeline later on for more options.
Combat is too much point and click, you should be able to move a group of ships instead of doing them one at the time. If you arrive with a big fleet it would drain the fun of using too many turns to move the ships with shooting range. When the fleet gets big it is nearly impossible to zoom out to select all ships.
You should be able to have template of your fleet when you attack.
Movement is inconsistent at the moment you do RMB/LMB depending on where you are.
It would be nice to have select fleet/ship by either LMB/D-LMB or RMB and when you want to move you just LMB on destination.
Building ships is fun in the start but when you get bigger ships the options are limited as I see it. Need more options for armour, speed, fuel, tactical computers, blackhole generator, jumpdrive when in tactical mode etc.
More slots to fill out on bigger ships, I would like to have more options to put more on bigger ships. At the moment I feel like when I have reached carrier and goes up to heavy cruiser/carrier I don't get that many options building a ship(it might just be me). I feel some of the ships are not worth having they don't give me anything extra.Also make the slots the same color of the items where you can add/fit them would be nice instead of guessing what goes where(or am I missing something here).
Planetwise when you get enviromental improvements you should open up for more options to build on the planet. I hope you don't just stick to 3 buildings on the planet like factory, Lab and defence. I guess you have something in mind later on for planet evolving. E.a entertainment center, farm, holo-theater, Palace etc.
Another thing I also like is having a planet which is like MOO where you find the motherlode of planets where you can get a biiig planet and some cool stuff.
I might asked for some of the things others also have asked for, so bear with me.
Just some thoughts after playing it for a couple of days. I hope you can use it. Keep up the good work
1. Desktop Corsair 450D Case, X99 MSI mobo, Intel 5820K i7(Hexacore), 16 GB Mem, Nvidia GPU 680 GTX driver v.364.51, Windows 10 Pro
2. Laptop ASUS ROG G751JY, Intel i7 4720(Quadcore), 16 GB Mem, Nvidia 980M(Driver 364.51), Windows 10