So I was thinking about some interesting things that I have always struggled to make in World Machine properly.
1st Feature Request, a new erosion type, Wind Erosion
This would be immensely helpful in the creation of realistic dunes, mesa formations, and snow being blown across peaks and accumulating. I am thinking of a node with two inputs, the heightmap input and a ground hardness/vegetation mask that resists wind erosion. The device would also output a heightmap, wear map, and a deposition map where the ground is worn away and the resulting material is deposited.
Possible parameters for this are strength, and how long the simulation is.
This erosion would include creep, saltation, and suspension, approximated of course. (Or possibly another parameter would be quality)
2nd Feature Request, adding water absorption into the ground
This would make the erosion device behave more realistically, and this option would be toggleable and off by default. Water created during the simulation would be absorbed by the ground by a guide provided by the user, where black would be zero water absorption and white absorbing all water that flows over it. Areas on terrain that are white on the mask would be more susceptible to getting eroded than areas that are black, behaving similarly to the hardness mask of the erosion.
(Better interaction with water and erosion would be nice)
To me, the first one would greatly enhance my terrain but I have a feeling that many would still use their own method of creating dunes.
The second feature request is simply a nice touch to the erosion device, but I currently do not direly need it but I sometimes find myself wondering how my terrain would be if I had this feature.