Hi,
An idea appeared: a new option allowing to select in the program - for example house, and to add him in "Prefabs factory" (house saved in the special format) which can open only program CENTRED.
Prefab at home or any other building (which must contain only statics) can be put in any place on a map (it will allow to copy statics - simply adding it in prefab) and also will very simplify work...
Dear khitman, please think above my suggestion.
And sorry for my bad English.