I would’ve made a corrupt New Republic aided by a corrupt New Jedi Order* the enemy of the ST. The First Order would’ve been the few remaining non-corrupt Jedi allied with the Imperial Remnant and other dissident groups. And I would’ve set the trilogy over a hundred years after ROTJ.
*Yes, Jedi. Not Sith. Not Knights of Ren. Self-identifying Jedi, blue/green lightsabers and all.