To partition objects in separate folders (akin to Adobe Illustrator) so they can be neatly organized and named appropriately. Thus: instead of 5,000 "objects" and 1,000 of them simply "hills" could place 100 "hills" in a "Northern [region name]" folder, and another 300 in another, and the 400 in another, and so on.
Then ability to "Lock" folders and only affect those in a folder, rather than anything nearby.