I bought the game a few days ago and up until today I was messing around just getting a feel for how production works. Today I actually tried to play a real game. It's a simple setup, a small galaxy with one Beginner opponent. I'm naturally comparing my experience with GalCiv2.
My first impression is that the pace feels much slower. I just hit turn 134, and it took this long to explore and colonize the galaxy. Researching feels extremely slow. The shortest time to research anything is 7 weeks. Manufacturing also seems slow: upgrading production buildings takes a long time on a planet with full population and lots of production bonuses. Despite the slow pace, the pace of individual aspects seems in balance. The Age of Colonization seems only about half-way through, and it is right about time to start researching warfare. I'm okay with the balance of the pacing, but compared to GalCiv2 it feels like a snails pace. With the time commitment I've made so far, a small map in GalCiv2 I'd be researching Planetary Invasion by now. I know they've discussed the pace issue in the dev stream, but I doubt they're going to be able to speed it up significantly, and that is concerning. A small map shouldn't take 6 hours, and that's what it feels like is going to happen.
The Population Pressure and Wealth approval penalties feel severe. In a full-8-pop planet in order to maintain a 50% approval I need to essentially emphasize wealth, add approval buildings, or (I assume this works) add economic buildings (in some cases all 3). That is to say, it seems quite difficult to highly specialize a Research or Production planet, because the approval forces me to de-emphasize those forms of production. I'm afraid to even try farms to increase my production because it seems for every farm I'm going to need an approval building. I can't imagine how this is going to play out once governments are implemented and higher approval must be maintained.
There is another post on these forums regarding the Age gating. I can see the issue. By the time I reach the next age I think I'll have researched most of the techs, which means I'm not specializing.
This is beta and there are lots of bugs and UI issues I can overlook for now. But pace of play and approval issues are decreasing the "fun-ness" of the game already, so I hope for improvement in those areas. I look forward to any feedback or tips regarding the above.