Not sure if there is a way yet, but
GetEntityAverageSize(Entity)
or
GetModelAverageSize(Model)
would be nice, this way I can figure how far to place the Entity or model from camera, depending on size.
DBPro I believe has that, and I once wrote a program when I load an object it would place it's self a certain distance from the camera depending on it's size
I could load a pin and it would load in close to the camera, and if I load a huge planet it would look the same size as the pin on screen, but obviously placed much farther from the camera. But this way I had my models in full view, not to big, not to small.