That’s the exact reason actually. Imagine a world that is 4x4 “tiles”… rather, actual maps that are level streamed. Each level is 8136x8136 (or w/e it is in landscape), with foliage, NPC’s, AI, 100+ (in my dreams!) players, etc… etc… As it is, without VXGI, I’m close to making my computer explode!
Or perhaps I can design it using “today’s” technology, for “tomorrow’s” hardware, much like Crysis when it was first released?