Given what we know about the Sith Eternal and Exegol. Do you think Darth Bane was really the only survivor? I keep thinking how there were once many Sith and how when the Jedi fell they persisted. The Sith are clearly very tenacious, and I got to thinking with things in legends like Lost Tribe and Krayt's rule of one could Bane have truly been the only survivor? I even played Old Republic online and with so many Sith I find it hard to believe more do not exist outside of Bane's line.

I wouldn't mind Lost Tribe being used to introduced in post ROS. Maybe as the beginning of an era similar to Old Republic the Lost Tribe could be discovered and have dominated their own galaxy. Now that I think about it the Grysk could be the Lost tribe. I mean we know next to nothing about them but they could be a lost tribe of species who practice ancient sith culture.