No front fog's are not a requirement.
I just fancied the idea. Makes better driving in the dark down those wintery country lanes!!
Looked at the way the 206 does it. It has little round ones in the lower bumper.
The 5exi does not have this. But has a space where the mesh grill goes on the spliter. But findiing some driveing lights to fit will need a bit of research.