It feels like they didn't account for the increased area as the bands of possible spawn areas increases*. You find Elder plaques ALL OVER the black forest. There's practically one in every-other dungeon, and plenty next to stone towers. You find the Slime's not terribly infrequently in the swamp. The worst part is that it's the bloody swamp. Even Modr's isn't that bad. But Yegloth can be a real pain, and The Queen is like twice as bad (my buddy and I are at 12 dungeons delved and no tablet - yes, we know about the breakable and both kinds of 'hidden' doors).


* - As an example of what I mean, assuming the map is 10,000m in radius, a 100m band at the outer rim of the map contains more area than a circle of 1,407m radius.