While I realise most of the books and other content based around the Star Wars universe is non-canon I really dislike that "The Force Awakens" completely replaces and renders everything else beyond the battle of Endor, in the currently available universe content, useless and obsolete. I thought the film, when thought of as a stand alone movie (or even the start of a stand alone trilogy) was ok. However when you put it into the Star Wars universe as the canon continuation of such an epic story, it really disappoints me! Luke is weakened and portrayed as a coward, the new Sith Lord is an overpowered fool at the same time as being an unconfident self loathing pansy. The biggest annoyance I have is the fact that Disney have basically looked at the content available and gone "no, we're not having that, we're going to change all that and rewrite it our way so everyone knows it's ours now" which I wouldn't mind but they did such a piss poor job of it! I will only think of the new films and content beyond this as an alternative timeline! If Disney had any sense they would have used the already popular and amazing ideas and content available as inspiration at the very least but no they decided to slap all the fans of the books etc in the face!
In the novels, comics and other content available Ben is actually Luke's son and doesn't turn into a Sith, the son of Leia and Han that does turn is called Jacen Solo and his Sith name was Darth Caedus! He was first a hero of the Republic and after was eventually killed by his twin sister Jaina Solo. Luke Skywalker becomes the legend his father was supposed to be, he becomes basically undefeatable eventually but through long trials and training! Leia becomes a Jedi knight herself! There were literally hundreds of avenues for Disney to exploit for this trilogy but they decided to be exactly what they always have been! A greedy selfish American corporation!
They could have used the return of emperor palpatine for this trilogy his eventual defeat at the hands of Luke would have been the perfect end to it!