I guess it is kind of refreshing to hear a complaint about the AI not expanding fast enough - a year ago it was all about 'settler diarrhea'. My first game on PTW I played a 320x320 map, 40% land with 24 civs (because I could). I was reminded of one thing and discovered another (by the way I was playing the DyP mod). First, I was reminded that there is a 512 city limit which was hit in 1625 BC !! - no AI reluctance to expand here! What I discovered is that there is also an absolute limit on the number of bonus tiles which will appear. You get the luxuries and strategics at whatever rate you have in your bic file and then the bonus resource tiles are allocated. In this game, there was literally not a fish (or whale, shellfish or pearl) in all the water tiles I had explored or map traded for. And only a couple of cows in the fields. I am still trying to tune both the number of land squares for the biggest practical map plus the resource appearance rates to get fairly plentiful bonus resources plus enough strategic and luxury resources to make it playable (you try to win a very big map with 12 civs on Deity with one or two luxuries and no iron/ horses/whatever). I am also trying to work out how to slow down the expansion rate because on a 270x250 map, 30% land, everything except the mountains and jungle is occupied by 1000 BC. The AI civs all have 20-40 cities by 1000BC so I am just not sure why Agent Orange has noticed this phenomenon in his games.