Currently, random waystones just spawn in a randomly offset grid. It might be cool to spawn them per biome instead (as an alternative option), meaning each (large enough) biome would have one random waystone within.

This would be extremely difficult to implement, since it's easy to find the biome at a given location, but there is no knowledge of the biome's center or edges, nor anything that would uniquely identify a biome.

Scanning for the biome edges would be way out of scope for a feature that would likely hardly have noticeable differences to the current wild waystone placement.