I downloaded the gc2 demo and gave it a chance.
This is my impression after 2-3 hours.
The Music and the intro r well made. I like it. Graphics r nice too.
So far so good.
I started a new game in a small galaxy with the humans (as the demo allows).
I took a look on the racedesign, with no clue about the game

!
U can set some race abilities, like pop growth, industy, research, hitpoints for ships ... ! U also allowd to set a government like industrialists, ferderalsist, technologists ... all with theyre pros and cons.
A cool feature of the game is that u can modify the look of ur ships like u wish.
In the game:
The map lookd a bit botf (Birth of the federation) like. The gameplay is understandbale after a familiarizationphase.
On ur homeplanet u have
* research points RP
* social production SP (used to build buildings on the surface)
* military production MP (used to build ships)
And u have an economie display where u r able to set values for RP, SP and MP for ur whole empire. The values r 33% / 33% / 34% so 1/3 for each as default setting. U can set them like u wish f.e. 100 / 0 / 0 !
So if u like to research something u put 100% on RP, if u like to build a ship u put 100% on MP. But if u get more than one planet it will be not so easy to do, cos these values r setup for all ur planets.
To increase ur RP or SP or MP u can build some factories or research labs on ur planet(s).
I looked a bit around but I dont get displayd how much SP r needed to build a factory so I tryd it out. The only thing u get displayd is the amount SP my Homeplanet produces and how much turns (weeks) it takes to complete. So after I had 27 SP it says 1 turn (week) to complete I hit the turn button, but the factory now showd 1 of 2 turns to complete -.- ! I started new and tryd it with 100% SP = 32 SP iirc and it showd 1 factory in 1 turn complete. But on the next turn it wasnt build and it says again 1 of 2 turns done. So I gave it up to test more.
The shipdesign is okay, and afaik the battles r just ogame like (the computer battles for u).
Now I compare my impressions about gc2 with moo2:
racedesign:
I didnt playd gc2 much to say much about it.
economics:
MoO2 has 1 industrieal field. GC2 therefor uses 2 fields SP and MP.
In MoO2 u can set up one colony 100% for production and another for research or food, it just depends on how u set ur pop on it. In GC2 u can only set up these values for RP / SP / MP for ur whole empire.
In GC2 each planet has some fields where u can build some buildings. So if u need a fully MP planet u can build only buildings which increase the MP, I guess.
I like the idea to build more than 1 factory on each planet. In ascendancy it was possible too, to build more builds of one type on each planet.
All in all GC2 is maybe not bad but I would prefer MoO2 alone about the reason it has real battles. Further GC2 has no Multiplayer so this is just a singleplayer game.