Huge force field experiment

I was conducting some experiments, hoping to create a giant force field that would cover several exterior cells. Here's some curious limitations that I found out about the Oblivion rendering engine:

• DistantLOD meshes can be transparent and the background land can be seen through them.
• Water inside or behind a distantLOD mesh won't be rendered though...
• Neither will other DistantLOD objects... making transparency pointless in most cases.
• If the distantLOD mesh has collision data, it won't be used by the engine.
• As a result, for really huge distantLOD objects, the player can walk right into them... until the regular mesh loads and the collision data ejects them all the way back out.