Imma going to tell you my "What i'd have done if I was JJ Abrams" Pitch
OG SW was WW2
PT SW was WW2/Cold War (but done badly)
Sequel Trilogy Star Wars is 9-11 and the Global War on Terror [A thing many of the kid fans of the PT and Clone Wars series have experienced as actual soldiers]
Battle of Endor ends the war. But the Battle of Endor just didnt MAGICALLY end the war. While Luke/Leia/Han/Lando Et Al were doing the decapitation strike on imperial high command rebel forces Galaxy wide all struck.
Imperial forces and basically War Criminals imperial folks flee into the outer regions. Grand Admiral Thrawn signs the treaty paperwork where the new republic agrees not to pursue them, and do a general amnesty for mid to low tier imperials.
Leia and Mon Mothma run as part of a Parliamentary faction that is unable to secure the largest plurality but is part of a ruling coalition. Leia is kept on as the celebrity war hero in the government but she finds thats all of what she is used for. This starts to toxify her Marriage to Han. But she has kids, its hugely popular and gives her political career a boost....for a while. But that also taints the marriage.
Han takes a job at the Republic War Academy. Because not only was he a Hero, a General, and a Guerilla fighter. he was also a smuggler, a scoundral....AND a former Imperial officer. But BEING the Hero...being part of the government of the galaxy [even in a minor way] Chafes at him. He feels his desire to run off in the Falcon is super selfish given what all leia is going through. But the fact he doesnt tell her how unhappy he is taints their marriage.
Lando sells out and becomes stupid Rich. He tries to smarten up Leia on whats actually going on politically but she is to prideful and idealistic. He gets in a huge fight with Han after telling him he needs to man up in his marriage. Lando for those (and other reasons) helps finance the movement that kicks Leia back into the senate and out of former politics. Cutting him off from Leia for good. And he was the god father for their kids.
Luke spends his time finding all of the Jedi secrets out there [and putting the sith secret sin lock down]. Luke forms a new Jedi academy after INTENSE pressure from the New Republic. At the time of the new movie he still only has a handful of students. Han and Leia's son and Daughter are there and Itchy ((Chewbacca's son)) is there. Luke is distant from Han and Leia (over their dying and later dead marriage). The Death of the marriage hangs heavily on the Son of Han and Leia who was luke's first student. Less on the daughter who is the BEST student.
All of that changes when a former Imperial Loyalist world gets glassed by "Soldiers of the True Sith"
The New Republic senate is in turmoil as the new government [Primarily former imperials and business interests] is trying to figure out how to respond to this terrorist attack.
And Leia recieves word that a STORM TROOPER is on Tattooine in violation of the treaty of endor. He says he has a secret that will save the galaxy
I think you could do one without changing too much about the old EU before you hit the sequel trilogy, at least the stuff that happens before the next generation starts reaching adulthood.
So how I would do it is the death of the Emperor is the start of a new era, it's no longer the galactic civil war era. The war continues, but now starts the Imperial Pandemonium, or the Pandemonium era. You basically have the imperial warlords, moff council, political turmoil on Courscant, all of the early chaos from the old EU happens to the Galactic Empire, it doesn't collapse all at once, but it's clear that we're in the collapse period, just like the collapse of the Roman Empire didn't happen in a few years.
Han helps Chewie free the wookiees on Kashyyyk, Leia takes a leadership role of the Alliance, while Luke begins the first steps towards training other force users,.
Then you get a few events you could mention in the sequel trilogy, but that other writers instead can flesh out more. Names such as "The Thrawn campaign", "Cults of the dark side", "The New Mandalorian civil war", "The Rise of the Black Sun", etc.
The Solos have a kid they name Anakin Solo, because it would be stupid to name their kid after a man they didn't know, and I think it would be neat for a person of the Skywalker lineage and with the name Anakin that doesn't turn to the dark side, redeeming the lineage and the name Anakin in a way.
Training the solo kid then becomes Luke's primary goal as the child gets older, putting on hold training anyone else because it's important to get it right with the next generation.
The Empire manages to reorganize to some degree as the years pass, and the more competent leadership survives the infighting, but by exploiting the Empire's weakness the Alliance is surpassing it in strength. When the sequel trilogy is about to come to pass the Alliance is readying to capture Coruscant two decades after the death of the Emperor, but with the fall of Coruscant the Pandemonium era ends, the Empire becomes the Imperial Remnant, the Alliance becomes the New Republic and the Era of Devils begins as a conspiracy to topple the two galactic powers, and destroy the last remnants of the sith and jedi is put in motion
