well im not so familiar with cheats in ofp but i dont think a tool will be possible
its just to much work to du such a thing, its easyer to make it by yourself, for example in vc the skins are saved as a .dds file all you need for editing them is a photoshop plugin
to remove bushes etc u gotta edit the map manual, or dl an modified one
if theres a map editor for ofp it shouldnt be a problem, but as i said
ofp isnt my business