His arc after renouncing the Force (not shutting it off, just he stops using it because something bad happens), he finds he has to use it again to save his people (the Mandos), and it helps bring the Mandalorians up as a true third faction in the SW.
That is what I was thinking.
Then we can have some Sith acolytes running around, Rey's Jedi, and Grogu's Mandos being in the middle (any Mandalorian Force user would fall here) with whatever galactic government shenigans are going on.