I think it's too hackish. I would wait for the real 3d support in WME
I just want to help by sharing what i tried...
I dont think waiting for a "real way" to do something you can do now is that much constructive.
Some examples ....
Ive added particle in my game before wme suport it and i still use my own particles..
I added colision for realtime caracter.
I found a way to have a reflection on the floor for a couple mansion scene.
I built a complette weapon system including a bow with working arrow and soon bazoka with guided missile ...
I cant wait for all those thing to be added ...
And anyway what is the "real way" or the "real 3d" in a completly computer driven virtual world.
If you build a forest actor or a castle actor what make them less "real 3d" it is only the name "actor" only changing internal name in the engine by scene props or scene object will not make them more real.
And if by real you mean BSP, portal culling it is only a types of optimizations
for indoor level ... In small scene it is not needed at all.
I mean wme suport realtime 3d, name the objects how you want actor level object props it is realtime 3d object.