Since pro fantasy chose to release new monthly content focused on the Dungeon/battlemap style, I suggest considering elements where action takes place.

I would think of it as something very useful for future releases, villain stuff like cemeteries, necromancers, ancient libraries, temples, ruins, statues of unholy gods, more sarcophagi, dead bodies, items (magical or otherwise) like axes, gloves, bows, crossbows etc... Elements very useful in the elaboration of more characterized battlemaps.

Added to this in the concept of cities, I would not fail to evaluate the launch of Asian (Japanese - Chinese) constructions, which was the most requested topic in Overland's suggestions.

Hide the origin of the river with trees and... now the cat's jump... in this case the river... the biggest imperfections are not its contact with the symbols. These are the curves with strong corners of the fractal node... precisely where I try again to "hide" the imperfection with some icon... in this case trees.

Careful and Ricko don't mix