Give it to the right director and it will be done well. Favoro (sp) has been a golden child for Disney Marvel AND now Star Wars properties. I know you need to get other directors up to speed but that man has a very good touch that the audiences love.
Let him take the reigns on some of these projects and set the tone before handing off to another director. Not to have the other director change it but to have the other director work to understand and utilize his style.
The problem is they bring in people who ostinisbly LOVE the world in question. But then go about trying to put 'their' stamp on it because they love it so much they want to be indelibly bound to it.