Hi we currently use this tool (https://www.youtube.com/watch?v=WP473rNZ_Eo) on 3dmax. but a lot of issue with export not optimized game engine but still works like a charm on 3dsmax.time saver and got a lot of detail and customization.
if we got this features on unreal would be amazing! need customize (static mesh/skeletal mesh and texture) curbs, pavements, road elements , street elements , lighting objects, benches etc for huge archviz projects.