I freaked out as well when i first heard this. But a few points were brought up and i have now calmed down in general for me to think, it probably wont be that bad.
Disney does good when it comes to not messing with their secondary companies. I dont see this being any different. Also like was mentioned before, they use the 501st every summer foir Star Wars weekends. LFL and Disney have been tight for years and i only see this being as a good thing.
As for new movies....eeeehhhhh on the fence about that. Im a fan of the originals, 4,5,6. thats all i care about. Nothing will ever be as good as those. Not a huge fan of the prequels.
According to Mary Franklin, LFL will be run by the same people and the same way, only under the Disney umbrella. So i dont think we will see much difference on our end. They just have more Financial backing now. Lucas himself said they have material for more movies, he just didnt want to do them, personally. He never said they wouldnt happen ever
The woman who will be in charge at LFL, Kathleen Kennedy, was appointed by ol Uncle George himself, and she will be taking things forward. I doubt Disney will have any major input in what Star Wars stuff comes out. They will just get $$ and be able to put $$ into it. Cant see that as bad.
So i dont think we all need to worry. The only concern i had was the prop makers...but i have a fdeeling it will all be the same as its been. Disney is known for sending C&D's for their primary Intellectual Property, but not for their secondary companies. I would fear not, this is whole thing is probably more good than bad.
I like many others am undecided on this. While it does have great potential for new stories, I wonder since GL won't be there to oversee the development and ensure that they maintain cannon consistency, it could go south real quick. At least they could bring fett back, but I am sure none of the original actors want anything to do with the new story lines.
Actually in the article i read, it stated, Lucas will be a consultant for all Star Wars films made. Disney wont be making the new films..LFL will be...just financially backed by Disney.
There is this article here that explains alot:
http://thewaltdisneycompany.com/disney-news/press-releases/2012/10/disney-acquire-lucasfilm-ltd