Thought. Most RPGs give you one player who plays loads of characters, and a handful of who play just one. A few games give everyone loads of characters.
This limits the stories we can tell.
What if you mix this up - some play one character, some play loads. Maybe someone plays these specific 3 characters, another plays this family, and so on? Or everyone is GM except for one person who plays the protagonist?
I'm sure there are interesting untold stories if you mess with these parameters.