For anyone coming across this in the future–I’ve found a pretty good method of doing what I originally wanted. In modeling mode (needs to be activated in plugins) add a rectangle, subdivide it, and then use the sculpting tools in the deform panel.
I’m not going to be using this for an entire world space but for a more local forest path, should work fine. Can also be used to fill in gaps between megascans assets since a lot of the ground assets don’t “snap” together.
