A simple terrain sculpting/smoothing brush would be very cool to interactively edit terrains and design landscapes.
It would be nice to have some terrain modelling and modification tools similar to Sketchup and Lumion.
In the planning and design world, it is necessary to modify the terrain.
In fact, many cities are built in hilly areas.
Building sites require site prep; roads require cut and fill.
The functionality is partly offered by Aligning Terrains to Shapes
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