I actually think this change is good.
First off, George Lucas has always been a notorious control freak when it came to anything Star Wars related, and it can be argued that while his genius brought us Star Wars, he has been very stagnent in later years and has dropped the ball in numerous ways. I have great respect for George Lucas, but lately every decision he has made regarding his beloved franchises has degraded it. Not long ago he stated he was tired of the fans constantly bugging him about it and decided that he was done with Star Wars. Now he will be a consultant and let younger directors with big imaginations run the show. I'm excited with the prospects of someone like JJ Abrams taking things in a new direction.
Second, Disney has shown incredible restraint in not screwing up things that are good. Pixar and Marvel still operate with alot of autonomy and there is no reason to believe Lucasfilm won't be the same. Many of the same people who have worked for Lucas all of these years are still going to be running Lucasfilm, so I don't see anything bad there. Also, while I think we can all be assured Disney will use Lucasfilm to increase it's family safe entertainment, there is no evidence to suggest that the next Star Wars Trilogy won't follow in the the spirit of early Lucas, especially given the price tag.
That said, LucasArts has the most to benefit from this. As far as I'm concerned LucasArts hasn't released a truly great game in many years and George Lucas obviously wasn't interested in trying new things. With PC gaming starting to boom and new blood being pumped in, I can't help but to be excited.
It's especially awesome when someone like Chris Robert's is blantantely telling the gaming community that it's time we bring back what made PC gaming great. LucasArts holds the keys to two of the greatest space combat franchises in PC gaming history. With Star Wars Ep.7 confirmed, I can't imagine that LucasArts won't try to really push Star Wars back to the front of gaming.