Playing house rules limited lives (0 +1 per Forsaken Power gained respawns allowed due to my habit of playing before the first cup of coffee) I run through quite a few worlds and seldom see similarities except for some odd reason I've been getting a lot of max or near max range Trader spawn locations usually in tiny Black Forests tucked safely behind Plains... grrr.. enough to make me want to peek with the World Viewer but would ruin exploration so toughing it out :))

But yes it's one of the best procedural map generators I've seen and they do a great job of blending the borders.