I think you have no idea how much worse it could have been, there are plenty of really bad directors around. The issue with episode I to III wasn't the story, it was that Lucas lost his mojo, he didn't knew anymore how pacing works, how practical effects are sometimes better, and he had never been really good in telling the actors how to act, which got really terrible when they had to act in front of greenscreens for most of the time with the prequels. The original trilogy had also quite a simple story and was big on emotions and had nice action, all the things that J.J. Abrams is capable of delivering (only the lens flare thing he is doing can be annoying).
Oh I realize there are much worse, but Disney isn't stupid enough to give a project like this to Uwe Boll or Paul W. S Anderson. They're just blindly jumping on the Abrams bandwagon. I mean, hey I enjoyed Alias, early Fringe, and early Lost. I can even enjoy Star Trek when I can get my brain to shut off. But frankly he's only a step above Michael Bay.
I get it, they see how he "revitalized" the Star Trek franchise and hope he can do the same here. But in my opinion Abrams has KILLED the Star Trek franchise, from now forward we're likely to get nothing but schlocky action movies/series there. And now it seems likely Star Wars will be the same.