After the fall of the First Order, what would the consequence of the power vacuum be?

I am not a fan of the Sequel Trilogy but I'd rather attempt to make sense of it then the franchise simply ignoring it and never touching the time period post ST ever again, and I honestly think that a story set after the fall of the First Order could be interesting

The Resistance is way smaller than the Rebel Alliance was once the Empire fell, which would make it far more difficult for them to simply establish a new new republic like it was the case previously, which would lead to a power vacuum.

This is where I think lies potential for new stories, explore the consequences of a fractured galaxy and having no one in power