I'm thinking of not having Welnic check the map at all this time, even to avoid an isolated start. I'm willing to give it a go again if that's the hand the fractal map deals me. Since, as I said, most of Peter's advantages show up in the late game, an isolated start wouldn't prevent me from highlighting his characteristics.
Fixed; ah, for the heady days of vanilla Civ IV, when the mighty Cossacks had strength 18...
And yes, thank you for reminding me that my version of Better AI also has the previous advantages removed, much like BtS. Again, this game should provide everyone with a bit of a preview of what BtS will be like, without all the distractions of the new game features
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