When the EU ended it was heavily playing up the Sith and the Jedi balancing each other out. And they did add new force orders like the Imperial Knights. Skywalkers as a force tradition the names a bit silly.I like the idea of something else taking over. RotJ was neat, and them returning was cool when they were this mythical unknown. But the prequels really showed the flaws of the Jedi Order. Their failures led to the rise of the empire and the deaths of untold trillions.
Luke just going out and reforming the Jedi feels like repeating a mistake. Like the son of Mordred refounding the Knights of the Round Table.
I would actually be impressed by Abrams if he goes the route of a new order of Force Users that breaks the cycle of the Sith and Jedi. That changes the dynamic of the galaxy. That would be hella new and invigorating for the franchise, as even the EU was bound to the idea of Sith vs Jedi, which was made all the more pointless as the struggle had lasted 100,000 years.
The Sith were not around for 100 000 years maybe the species but the Sith as galcticc bad guys was more 5000 years. They over did the Jedi/Sith thing a bit to much but old republic era was interesting and the Sith/Jedi take on the Legacy of the Force comics was also well done IMHO with Cade Skywalker. Lukes Jedi also do actually save the galaxy as well so they succeed.
Lukes NJO was also a lot less dogmatic than the movies, they could go off and marry, found new force traditions etc. And some of them had a great visual.
I don't think they will go with eliminating the Jedi though, they might want to do a episode X-XII one day or set movies after IX. Its also risky if they do a Knights of the Old epublic era trilogy (it has been discussed) and potential audiences might not care about it if they know the Jedi ultimately go away. Its a very big Star Wars trope (the biggest?), I wouldn't go there if I was in charge of Disney lol. You would almost have to wonder if they are deliberately trying to chase their fans away at that point. Would bet money on that reaction being worse than the reaction to TLJ.