Don't know whether these have been posted before, but I've found some things that the AI needs adjusting on - and this is playing on the highest AI level where it doesn't get bonuses - not sure whether that's Intelligent or Bright
1) For some reason, the AI is not using morale tiles correctly. I consistently see the AI putting appropriate structures on all other tiles - production, research, influence, farming, etc but for some reason, it is not putting morale building structures on morale bonus tiles. Needs to be fixed.
2) When fighting influence attacks, the AI tries to do the right thing but ends up hurting itself. It will load a planet with influence structures - but this seems flawed to me because it renders the AI incapable of producing fleets quickly. Instead it seems to me that the Ai would be better served by building up manufacturing, and then using that to build influence starbases to offset influence attacks.
3) I rarely see the AI build enhanced higher level starbases. This may be tied to their lack of manufacturing capacity because they are building all the influence structures instead.
Just some suggestions. Great game regardless, just needs some tweaking on the AI, I think.