Here is George Lucas from his recent interview with Charlie Rose:
Lucas defended his vision for the six previous Star Wars films, which he said involved constant innovation. “I worked very hard to make them completely different, with different planets, with different spaceships – you know, to make it new...”
And no doubt everybody does know, what he means. But as Jan Cox pointed out, you have pigs and wings, and putting them together --- that is NOT new. Rearranging the known, is not the "new"...
The new is possible, is extant,