I, for one, enjoyed what they did with Tron Legacy. Though it'll be weird seeing a Star Wars movie start out with Cinderella's Castle instead of the 20th Century Fox searchlights....
On a more positive note and from a business perspective this move virtually guarantees Wars a permanent and immortal place in film and entertainment
edited to add: unlike other movie studio's e.g. Universal - Disney has a huge theme park in Asia and Europe.
Not only does Disney own a huge film division but Wars will now have place in their world-wide theme park operations and
on ABC television which they own as well.
While Fox owns a TV network they don't command entertainment interests that would give wars a home in one or all of their theme parks.