If it's on Unreal I doubt it will support modding at all. They're strict with their 3rd party licensing so Obsidian providing a level editor or an actual tool kit would be unlikely'expensive for them. And making models for Unreal is a serious pain and not worth it. I stopped doing Unreal compatible meshes and runtimes for DAZ after one project. Can't paint for depth using DDS files, texturing has to be done ON THE MESH and the runtimes are flat sheets of color. Every crease, wrinkle and shadow you see is fuck'n real. NO.THANKS.
Now I'm depressed.