OK, here goes.
Not very positive over all. I've started and quit about 5 games because of frustration with it.
Where to start:
Exploring:
So much Miasma. So many canyons. It's hard to get around because of all that stuff. Finding a route to Alien Nests and stuff with some units is especially painful. I hate Miasma!!
City attacking:
I was a noob in my early games, attacking with some Rangers and Soldiers, and then finding that they all did about 5 damage to the city. OK, realized that I needed to get levels in an Affinity to get better units, but they were all shot down too easily by the city defence. Ah ha, I need Missile Rovers. They are the equivalent of Catapults and great at attacking cities. So, in my latest game, I attacked with 3 Missile Rovers, 2 Marines, 3 Gunners, a Gunship, and 1 Combat Rover. First turn, one of my Missile Rovers was taken out by the city, Rocket Battery and some aircraft. Then, I saw that they only are doing 7 or 8 damage to the city, while my Gunners are doing 14-15. WTH? And, to cap it all off, the Gunship is best, at 20-21 damage. LOL. After about 5 turns I actually take the city, but I lost nearly all the attacking force, losing at least one unit a turn (and this is only on the difficulty level above the lowest!).
Tech Tree:
How the heck do you know what it is a wonder or not, and why is there no wonder filter?
Healthiness:
How on earth do you keep your empire healthy? Even with 3 or 4 cities, I'm finding it really hard, even after building Pharmalabs, Clinics, and all the health buildings I can think of. Yikes.
Production Notification:
Why is there no notification of what you just built in a city?
Stations:
I was looking at some great real estate to plant a couple of outposts for my second and 3rd city. Then a station was plonked right in the middle of the area. Why can't we found a city closer than 4 hexes away, now that a station is only 1 hex and doesn't grow? Here's what happened also. I founded a 2nd city in the now best spot because of the station. But I then found out the station had been obliterated, and now the land I was planning on settling is all messed up because of my 2nd city. So frustrating.
That's about it. I will try and stick at my current game, now that I actually conquered a city, but I still don't know what I'm going to do about health, and still can't figure out any appropriate wonders to go for.
There are positives to the game. I like the quests, I like the virtues. I like the Unit Upgrades. I kind of like the way the Tech Tree works.
But, there are lots of negatives for me right now too.