"Pre-animated meshes as a feature? It is listed further down the page as relates to Vue 5."

Oh yeah, don't know how I missed that, and you can use them in ecosystems. If there's some way to control their behaviour in an ecosystems, that's the most fantastic feature there.

"I mean you can actually move things around in it without waiting five minutes for it to regenerate the whole scene for every millimeter you move the object :)"

I very much doubt that you will be able to move any individual object within an ecosystem, just define a set of rules for distribution.

As far as memory use goes, e-on must (at last) have adopted the notion of instantiation for such huge arrays to work. Consider this; a Vue maple averages 44,000 polys, if we take it that those polys are triangular and defined by 3 x 3 x 32 bit numbers per poly that gives around 510k for the geometry, on top of that around 1k is probably needed for a descriptor containing: name, translations, material, visibility, etc. An instance of that tree (i.e. an exact copy), even translated rotated and scaled, can be repesented in 40 bytes. Take it further and a group of instances can be instanced for a similarly small overhead.

Of course it still has to get rendered though...