You haven't followed any of this have you? Episode 7 clearly builds off the original trilogy. Not to mention the "Expanded Universe" books and comics carried on the post-Episode 6 story for decades so there clearly is plenty of stuff to build off.
It also seems you have a shallow understanding of Disney. They make plenty of stuff that isn't remotely "kid friendly" or "magical". They own everything from ESPN to The History channel. This company is successful because they know how to handle the franchises and companies that they own.
Admittedly I have not been following the 7th movie much, as soon as I heard they were making another, I thought it was the dumbest idea I'd ever heard and put it in the back of my mind. I MAY end up watching it, but know that I would be going in not expecting very much.
As far as Disney goes, name a
movie by them that wasn't animated, wasn't about fairy tales or loosely based on a one, or set in some magical fantasy land complete with some generic happy ending. I honestly can't think of any, and if you find one that I agree doesn't fit those categories and was actually somewhat decent, then I concede. But as far as I'm concerned Disney has no place in the Star Wars Universe. Not trying to hate on Disney either, just genuinely wondering what movies they have made that come close to a Star Wars-esque genre.
Also for the record, I am not hating on Star Wars at all. I enjoyed them and own all 6 movies. While I agree that 1-3 weren't as good as 4-6 (3 was pretty good IMO tho), I firmly think they should have left it at the conclusion of 6. Whats better than a story about a kid who battles hardships and comes to redeem his father? What more can you possibly do with the ending of 6 to "build" on it that would make sense? Like I said they wrapped it up very nicely and it seems like they would have to reach quite a bit to find something to build a believable story for 7-9 which weren't supposed to exist originally...