Make this the ending to Episode I:
Make all Sith die by their own hand. In ROTS, Dooku jumps off that balcony, only to land and cause his head to fall off. I guess Vader already does, and Palpatine in ROTJ doesn’t count anymore. Palpatine in TROS could fry himself perhaps, with Rey turning off her sabers as he keeps pouring the juice onto himself.
Yoda: “Always none there are.”