The AI logic for choosing planets to colonize needs work. I was playing a game (at Normal level) where all the AI races used their precious game start colony ship to colonize very low Planet Quality worlds. One of them in particular settled on a world with PQ 3 (using their game start colony ship) when there was a PQ 16 planet just 6 tiles away!
I suggest that the dev team add some "common sense" to the AI colony settlement logic like:
- Never colonize a planet with PQ 2 or less, at any point in the game
- If the AI does not have any "terraform tile" techs yet, do not colonize anything with PQ 5 or less. As the AI gets more techs that unlock tiles for terraforming, increase that number accordingly
- AI should treat their game start colony ship like GOLD! AI needs to scout for a decent PQ planet before using their starting ship, because it takes a while to build more at the start of the game. At least scout to nearby stars with your survey ship before wasting the colony ship on a PQ 4 (or less) planet in your starting system.
If anyone has comments on the PQ numbers I mentioned, please speak up. I haven't played enough to know what would be appropriate PQ numbers for the AI to use for these decisions, but I think these logic changes need to be made in some form.