With WSS you can create your own Foliage/Character/Actor with custom parameters to be spawned in any landscape or surface. Spawn your custom Actors and Foliage procedurally using Seed parameters, as well as your own characters in a dynamic range around the player. Customization options for foliage includes: Instance generation distance, transform "Random" procedural modifiers, density of chunk and instance, Foliage Channels (Allow for more complex rules about foliages avoiding collision with other foliage types). Download the Example project and try it out for yourself!
WSS Is meant to be a base for which you can customize and add your own functionality based on your specific needs. With very well documented blueprints, you can learn how the system works and tweak any areas you want.
Warning! EditorScriptingUtilities plugin is needed. Check the documentation for how to enable it in your project.