Having read the latest tweet from Ron Howard it would seem a reasonable expectation that we will actually get to see Han make the "Kessel Run" and then what he does with the Falcon that made him such an exceptionally skillful pilot.
I'd like to point out that how starships behave under the conditions of hyperspace travel in the SWU has been highly consistent over all the completed trilogies, the cartoon series, the video games,comics and novels ,until we had TFA.
Its therefore a fair bet that JJ as director and co writer introduced it in TFA. It really seems like no coincidence we get two distinct exceptions to the rules in the same movie (along with all the other sins) given, as I have said, what he brought into New Trek.
That they also did it in Rogue One annoyed the hell out of me, but under the circumstance the risk of the jump warranted it, though again it shouldn't have worked being so deep into a gravity well. Other than particular itch I've watched Rogue One well over a dozen times and with considerably more enjoyment than TFA so I'm very happy it got made.
But again, it makes the viewer wonder why all the other spacecraft have to climb out of an atmosphere and get away from a planet, when others are shown to be able to just jump immediately anywhere. And absolutely the last thing I want to see appear in IX is the sudden ability of star destroyers to be able to track and fight in hyperspace ala "Into Darkness".
Anyway, as regards IX its how JJ leaves it that most bothers me. In theory because Luke is really his only remaining major character from the original trilogy , he's relatively free to do what he wants with all the others and in that sense I don't care, I don't have that much invested in them. But it is the end of a huge journey for all the characters so the conclusion needs to be more about the personal stories rather than space mega weapons again, which would be a disappointment to get at the very climax . But I also don't want him to screw up the eventual fate of any of them by introducing something like a superforce "regenerate" that brings the totally or nearly dead person back to life or have some other major new force power revealed that changes everything going forward.
I hope he produces a stunning and fitting end to the new trilogy, going out on a better more original note than perhaps ROTJ or ROTS. BUT his natural inclination to go over the top and indulge himself in stylish action set pieces rather than having a strong and satisifying storyline that ties up most of whats gone before argues against this.