Hey. I created one such useful thing here, which removes the army of Panau.
There are two versions of the mod for different types of people.
The first version leaves the army, but it simply ignores you (except military bases and missions).
The second version completely removes the army of Panau (but there are some glitches).
Video demonstration:
https://www.youtube.com/watch?v=AvTsVJpCPwk&t=145s
https://www.youtube.com/watch?v=Qn4DBjJvnQg&t=3s
Have a good game :3