I'm going to give you guys the craziest fucking theory of all:
Disney paid 4 billion dollars up front, they planned expansions to every park, a new themed hotel, etc..etc..etc...and with no hyperbole the entire future of Disney riding on this one film. All the next films don't matter if this one gets panned like EP1-3. So they took no risks, were vague, and kept to the most simple storyline possible with the understanding they could fill in all the blanks later. The one thing they couldn't do was fuck it up. And they didn't.
So of course there's no fucking story yet. There will be, and we will all pretend (myself included) it was setup. It wasn't.
This is truth. Disney is now forced to do what the video game industry has been doing with franchises such as Call of Duty and Madden for years. There's just too much money riding on these IPs for them to allow for much risk, and so they're forced to play it safe and reinvent the wheel.
The best thing for Star Wars would have been if George Lucas didn't sell it for such an ridiculous amount of money. If he really loved Star Wars, as much as he so often claims he does, he wouldn't have done so, because any reasonable person would have known that doing so would force the buyer into a risk averse production strategy. That or he could have just let other directors make movies using his ideas and stories and not been so fucking heavy handed, and had some god damn humility. The essential story behind the prequels wasn't that bad. It really wasn't.
If the Trade Federation would have been a bit more menacing, if they had focused more on character development of the better actors (Ewan McGregor), a few changes made (removal of Jar Jar), and other corrections the PT could have been absolutely fantastic.
The plot was great. You had the Dark Lord of the Sith playing the victim, whilst pulling the strings, from the very beginning, all the while you seeing Anakin bond with Obi-Wan knowing that the inevitable was going to happen.
And in Episode III, when Ewan goes on his rant before he owns Hayden Christensen (you were the chosen one!)... I loved that scene. I love that they're doing a stand-a-lone film for him, if that's true. Totally deserves it. He was the only person in the prequels that showed any passion or talent.
I mean look at Empire Strikes Back. It was a Lucas' story directed by Ivan Kershner. The perfect mix, and undoubtedly the best SW film ever.
The 3 People George Lucas First Asked To Direct The Star Wars Prequels - CINEMABLEND
Apparently we have Spielberg to blame for the prequels. I can only imagine what Paul Verhoeven could have done with that story! He was just coming off of Starship Troopers, and this would've been right up his alley.
And Lucas apparently didn't know that people above the age of 12 liked Star Wars. Han shot first. Life isn't black and white.