My biggest complaint about the game currently is how passive the AI is. Two of the AIs act on the highest difficultly like AIs are supposed to (ARC, Brazil), the others are just too passive. I feel that AI aggression needs to be increased across the board, and on top of that the aliens need to be made much more dangerous, increase the way they aggro units from two tiles away to three and make them attack unprotected civilian units even in borders. Shitcan the ultrasonic fence trade route upgrade.
Interesting... on Mercury, or whichever is the standard difficulty, I've had pretty consistent success at going to war with other civs.
In my current game, I'm playing Brasilia/Artists/Coast Scanner/Soldier and attempting to see if going deep into Might will ever work, so I've ended up hunting aliens quite a bit with Scavenging to boost my science. The other civs told me to stop but I continued anyway.
Also I have about 50ish Floatstone and went for Purity, while the other civs on my continent picked conflicting affinities.
Also I didn't send any trade routes to them and refused to hand over any of my resources.
Also I kept doing expeditions near their borders and let them know that the expeditions would continue regardless of their complaints.
Also... initially, my army was a paltry 4 Gunners when the PAC and the PAU DoW me
Might virtues did squat for city growth so it was taking so long for everything to be built. Luckily I was close to researching LEV Tanks and have fielded about 9 of them along with a bunch of Dragoons. I found it depressing that, despite getting Adaptive Sciences and Martial Meditations, I was still behind on the military tech curve compared to PAC for awhile and had to rely on sitting behind a river to get potshots. Also due to investing really heavily into an army, my unit maintenance costs started getting out of control, despite having built mostly generators over farms for most of the game.
I picked about 5 Might virtues before I went off into Industry for awhile to get energy bonuses, but next time I think I should try Might + Propserity.