LOL ... personal questions regarding a few applications of the engine I'm interested in, for projects of a fictional nature.
I'm currently working on a trilogy of fantasy novels, loosely entitled The Journeys of the Greywolf, which will chronicle a main character's journey during a war he didn't want to be a part of. It was loosely based on a PBS television series called "How the West was Lost." One of the projects I want to create would be a companion application that would take a potential reader on a virtual tour of the world I'm creating. Thus the reason I'm interested in model hierarchies, the way the engine builds the level of detail, etc.
Currently, I'm working in Lightwave and Zbrush to create the world, but I haven't been able to achieve the level of detail I want for the video clips (I've come very close, using some layering techniques the Outerra engine uses, but it's still in its early stages). Something like the Outerra engine would give me that level of detail, provided I can come up with the height maps and other details necessary (which I'm currently working on). Plus, there are a few other side projects that I recently began contemplating that the Outerra engine may be able to do for me, which most other current freeware engines only barely are able to accomplish, without a lot of re-coding. Since I'm not a programmer (just a glorified HTML jockey and pixel pusher by trade), the Outerra engine has possibilities for me that only one or two others come close to approaching.