Disney, by way of Kennedy, wanted to remake Star Wars into their own image of what they believed it should be with out having the same background and even love for Star Wars most fans have. Now, in stead of using material they already had, they made their big declaration to sweep anything not in a video format completely to the side and redo things from this point forward, allowing maximum flexibility but killing off a TON of "lore and legend" that they are now trying to piecemeal back into cannon. Good case in point - Grand Admiral Thrawn. Ok fine, but now they have the flexibility to do whatever future stories they want but that also means they have to actually fill in the background with those stories etc, and that's a ton of work. Now they managed to want to move forward with new characters but they need the older story lines. Instead of working new movies into the existing material and stories they moved forward in time and made stories recreating the original trilogy premise, by having to come up with completely new characters and villains and somehow rewind the Star Wars universe to allow for a Rebels vs Imperial government again. Starkiller base etc, and get rid of the old characters, kill off Han, and Luke but the new characters can now take the place of the old functionally. So in wanting to set up their own "New" story line, they just defaulted back to old ones they owned directly, vs attempting to play different parts in the original dynamic like Rebels and Clone Wars managed to at least do.
Now lets add in that they also started some planning for Disney Lands in various parks and they wanted these lands to be with in the cannon of the material they are producing. Great idea, but now they are limited to the 1/2 re-baked material they boxed themselves into by making the main movie story lines further in the future with new faces but the similar rebel vs Imperial, but not the same rebel vs Imperials. They need a location now that they can map anything they want into it, and instead of doing the story work to make someplace like Tatooine, they made Batuu. Honestly they could have done the same thing in Tatooine, on say Mos Eisely and it could have worked the same, even if they wanted to keep the future timeline and resistance vs First Order.
Most of their problems are self inflicted story problems, IMO. They would have just spent a bit more time thinking out how to flesh out stories, maybe actually read some of the legends stories to get some ideas, they would have written themselves some more flexibility. Not saying it's easy to do, I've been writing some Star Wars RPG story lines for our gamign group and for GenCon a few years now and attempting to not box yourself in can be hard, so I've also learned to lean on other material that already exists to expand with vs trying to write up everything from scratch.
Now Disney managing to divorce the old fans from any real connection to the new material begins to cut out the older fans, WITH THE MONEY TO SPEND in leiu of the future fans only. Forgetting that future fans become fans when older fans introduce them to the fandom and 'teach' for lack of a better word, the fandom to the new generation. Sure the new generation will pick up some fandom with out the older ones doing anything, but it's now become its own fandom at that point and loses any of the backing of the old fandom to keep the new fandom going. The Clone wars era trilogy created new fans as older ones brought their kids/newphew/nieces to see those movies and play those video games with them. Those movies SUCKED, in comparison with the original, but they at least kept the fandoms connected, allowing the old to bridge with the new and that new to carry some more of the fandom.
Ok I'm done with my Star Wars fanboy paper now...