LOD is needed more then ever for outdoor worlds waay more then indoors. Any kind of LOD is better then none for outdoors. You can see more objects & far away so they need to be simplified to keep the framerate up allowing for more objects etc. Polycount & surface subdavision drop framerate but hardly effect filesize , skin/texture size hardly impact the frame rate but almost determin filesize. So for map entities with lots of LOD for sure, models, HMPs LOD with small skin sizes, and I think sprites can be left alone. Marco if you would please elaborate.