If you check other mods’ tdf file and folder structure you can see what the tdf is calling for and where it gets it from. Nordic does a lot of theater switching with it’s tdf. some theaters do less like 2012 which now has its own db, but used to get both db and terrain from original KTO.
all things in tdf that can be switched that are known by me is listed here
https://www.benchmarksims.org/forum/showthread.php?29367-Theater-developmental-notes-switch-everything-under-data-w-TDF&p=409939&viewfull=1#post409939
If you want to keep the models from original KTO and only adjust the properties like load outs, weapon functions and vehicle properties. this might help.