I use Unreal these days. I prefer Unity's way of importing where the settings are attached to the asset. The one thing I miss from Unreal is the mesh collider setting. It allows you to set the number of polygons in your collider mesh as well as the number of colliders you want to decompose. So it would be fab to have all decomposition options at import. I know that skinmesh would require a bit more work so maybe that can be added only for static meshes.